Stylistic improvement of models.ComputeNodeStat

The patch is aimed at improving the readability of models.ComputeNodeStat.

Here, we rename the 'stats' attribute of the class to 'compute_node' (due to
the fact that the corresponding relation actually maps to ComputeNode class,
not to ComputeNodeStat). We also rewrite the relationship() method call to
make it stylistically conforming with the analogous 'service' relationship
in the ComputeNode class: we add the 'foreign_keys' parameter, wrap the
'backref' parameter into a method call and remove the auxiliary 'primary_join'
variable.

Change-Id: I2b1f27b4c1d06f364af01fc82d3490fd3bbf4ac0
Closes-Bug: #1215390
all_tenants=0 should not return instances from all tenants

Fixes set up of server list filters so specifying all_tenants=0
or all_tenants=False when requesting a list of servers does not
result in instances from all tenants being returned.

Change-Id: I72575e4e2cf9019cfd5bf3b07ada53cadf2001e2
Closes-Bug: #1240347
Move get_all_tenants policy enforcement to API

Cleanup to move the enforcement of the get_all_tenants policy
enforcement to the API level. The all_tenants search option in
compute/api.py is only used to trigger policy enforcement while
the logic required by all_tenants (not specifying a project_id or
user_id filter) already resides in the servers API. The flag does
not need to be passed to the db level as it is ignored at that
level anyway.

Partially implements blueprint nova-v3-api

Change-Id: I5200c8912596ffbd32c5f7c6d74939782ff70260
tenant_id implies all_tenants for servers list in V3 API

Makes tenant_id imply all_tenants is also enabled unless
explicitly disabled when a request is made for a list of
servers. This only occurs if the requestor is an admin. The
change is only made for the V3 API as although this behavior is
more intuitive it is too late to change it for the V2 API.

Change-Id: Ia84e62c8dc80ac3a2f16aee3620af31987cce570
Partial-Bug: 1185290
Enforce compute:update policy in V3 API

Now that compute/api.py:update() is no longer being called for instance
updates the policy check is no longer enforced.  This adds policy
checking back in at the V3 API level so that the compute:update policy will
continue to function as it did before.

This was fixed in I365ad8ac2845d914deefb841c314a50f4869dba0 for the V2
API.

Change-Id: I9caa3e10fe029569c6fd467e7b86103dd6590f9b
Closes-Bug: 1242955
Sync log from oslo

5fef5a8105 allow keeping of existing loggers with fileConfig
fb8075a19d Add amqp=WARN,qpid=WARN to default_log_levels
4654a5d247 Don't override default value for eventlet.wsgi.server logging
41ddd7a975 _get_log_file_path explictly return, when logfile/logdire unset
e12e6b45f8 Make openstack.common.log Python 3 compatible
572cfecb4d Make Messages unicode before hitting logging
3243cdfbe9 python3: handle module moves in log

DocImpact

Change-Id: I7bd940a9a2dd4af3d876f2acc650f18675ca177b
Issue brctl/delif only if the bridge exists

Add a check for existence of the bridge before we try cleaning
up as we see a lot of spurious exceptions in the logs especially
when rebuild_instance is in progress and terminate_instance is
issued

Closes-Bug: #1243488

Change-Id: Ib0e2e4d9506e3a8f63201d28a3fc2c910c77d3bd
Clean BDM when snapshoting volume-backed instances

When snapshoting a volume-backed instance, its block device mapping is
copied entirely into the image properties of the resulting snapshot.

This may lead to some errors when booting from that snapshot because the
fields 'id', 'insance_uuid' and 'connection_info' must be generated for
each instance instead of reusing the ones from the original instance.
For example, sharing the connection_info will cause the new instance to
try to connect to the original volume instead of creating a new one.

This patch cleans all the database-specific plus the connection_info
fields from the block device mapping when creating the snapshot.

Change-Id: I4190e9519d641c61b00b5d86c3885f2ae4fa86f3
Partial-Bug: #1246327
Process image BDM earlier to avoid duplicates

If the block device mapping from the image properties are not handled at
the same time as the ones defined from the API, we might make the false
assumption that the instance has no root and failing or, in the case
we're booting from an image that only defines a BDM and has no disk,
creating a local disk BDM as root and ending up with two root devices
which is forbidden.

This patch moves the handling of the image block device mappings to the
same method were we check the ones provided throught the API. This
allows nova to decide wether the instance needs a local disk from an
image if no root device is defined in any of the block device mappings.

Change-Id: Ide95357895ab4dd1338ab5ee3ec25294af1d010b
Closes-Bug: #1246327
Refactor UnexpectedTaskStateError for handling of deleting instances

To avoid having to repeatedly unfold UnexpectedTaskStateErrors and
do seperate handling of the 'deleting' task state from other states,
everywhere this exception is handled, introduce a separate exception
UnexpectedDeletingTaskStateError that derives from the above.

This way, most handling of InstanceNotFound to handle instances gone
during some action can be made to also include this new exception.

Change-Id: Ia833c2b2361f32c7e33c84ec14d3af6231119a99
Related-Bug: #1223843
Catch exception while building due to instance being deleted

In run_instance() a instance_update() call in _start_building() can
result in a UnexpectedDeletingTaskStateError if the instance gets
deleted while being built.Since this is an expected situation, we
don't want this exception written in the logs or worse, the instance
be set to error state. Instead catch this and raise a proper
BuildAbortException that gets handled above this call.

Change-Id: Ib9d3dd22b33b104f1593d534876a5387df81d11c
Closes-Bug: #1223843
Checking existence of index before dropping

Migrations modifying indexes drop and recreate the index.
If an index does not exist dropping would fail the migration.
As part of this fix, checking if index exists before dropping it.

Fixes bug 1243553

Change-Id: Ic75744bdccfbc516d36a9711ad6997fd86c7a722
Update quota-class-set/quota-set throw 500 error

The server doesn't check whether the parameter "quota_class_set" is in request
body.So the 500 error has been thrown.

We should catch the KeyError and transfer the KeyError to
400(HTTPBadRequest) instead of 500.

Change-Id: I431a836bd35f846790497d6179515e8d559e2cd0
Closes-Bug: #1249222
libvirt: pass instance to a log() call in the standard way

If we pass the instance in the correct way, then we get nicely
formatted logs which are easier for admins to use.

Change-Id: I27ab372a3388e2aa02491da07c616807bcbb14ef
Shrink the exception handling range

On evacuate action API, the exception handling for getting API
parameters is wide. This patch shrinks it to necessary range for
code cleanup.
In addition, this patch adds some negative tests for the lack of
"onSharedStorage" parameter.

Change-Id: Iccfa9d455758af432b5bcbb33842034f07e8fdc3
Cache compute node info in Hypervisor api

When extend hypervisor api, it would be much better to cache the
compute node info like is done for instance and flavor requests.

Partially implement blueprint pci-api-support

Change-Id: I73a96db7beb4cc0f017008f81e9f671382ad9105
Add V3 API sample for server's actions

Adds api sample tests and api samples for server's actions

Partially implements blueprint v3-api-unittests

Change-Id: I4b420f09f9fc9a7f6fab8dbaeaa9b93631909255
Add v3 api samples for availability_zone

This patch adds api sample tests and api samples for availability_zone.
Because the detail's response use host name as the key of dict and samples
tests didn't support replacing key with variable, so startup nova's service
with specific hostname instead of uuid.

Partially implements blueprint v3-api-unittests
Partially implements blueprint v3-api-specification

Change-Id: I9090a73a8293f26d63744a10d7ffbfc887e37e7c
Add v3 api samples for scheduler-hints

Adds api sample tests and api samples for scheduler-hints

Partially implements blueprint v3-api-unittests
Partially implements blueprint v3-api-specification

Change-Id: If7bc47dc92c1e7f33f80ea567688d067c42fa219
Add V3 api samples for access_ips

Adds api sample tests and api samples for access_ips

Change-Id: I9d9249a48e7f7ccdff0146fbe5b25463d66a93a7