Add note why E712 is ignored

According to the commit message in
560e5cd84ef2c1a6427c78d35eedc66445e1f77f we ignore E712 because '
With this change we ignore E712 since it is normal to use
"column == True" in sqlalchemy.'

Add note in tox.ini explaining this.

Change-Id: I393e13b1430aae46f958311875678bd99e17b13c
MinDisk size based on the flavor's Disk size

When you create an instance from image  the instance disk size
is expanded to the disk size specified in the flavor.

Normally you cannot use the snapshot  for creating an instance
with smaller disk size (flavor)  because it  potentialy
causes a data corruption.

Every snapshots minDisk size should be inherited from the flavor.

bug 1200279

Change-Id: I1d0e909b78db2c863b4fbb54ad9065207f1a0abe
xenapi: remove propagate xenapi_use_agent key

The compute.api class will already propagate then xenapi_use_agent key
when required, so we can remove the xenapi specific code that tries to
propagate this value. The code did not correctly access the system
metadata, would have failed to propagate the key anyway.

Fixes bug 1204933
Change-Id: Ib291a265318d80705129e565155d4250fd704b75
Enforce authenticated connections to libvirt

Authenticated connections for both reads and writes
increases VM security.

The virConnectOpenAuth API is flexible, it effectively
obsoletes virConnectOpen and virConnectOpenReadOnly.
ReadOnly access, with its reduced access to the API,
is obtained by passing in the vir connect flag
VIR_CONNECT_RO (=1)

An added advantage of using openAuth is the fewer API calls
that need to be maintained in the nova libvirt driver.

Removed virConnectOpenReadOnly methods and tests.

Change-Id: I6cb3825d1225807955177d7500899babbb569e20
Adds factory methods to load Hyper-V utils classes

Blueprint: hyper-v-wmi-v2

This patchset provides further decoupling between the ops modules
(e.g. vmops, volumeops) and the utils modules which handle the
interaction with the underlying OS.

The main reason for this refactoring is the need to provide an
implementation of the Hyper-V WMI V2 API (root\virtualization\v2)
that replace the initial version introduced with Hyper-V Server
2008.

Change-Id: I8a2dd8f7dea2e4044525866a0ab26211eb17bf99
Port server_usage API to v3 part 1

This changeset only copies the v2 files into the appropriate v3
directories unchanged. The copy as-is will not be loaded by either
the v2 or v3 extension loaders. The second changeset will then
make the changes required for it to work as a v3 extension.

This is being done in order to make reviewing of extension
porting easier as gerrit will display only what is actually
changed for v3 rather than entirely new files.

Partially implements blueprint nova-v3-api

Change-Id: Ie5cbde7d9a0d77e78c9f9cc577d8cbd36fb74188
Port server_usage API to v3 part 2

Ports the server usage extension and the corresponding
unittests to the v3 API framework

DocImpact

Partially implements blueprint nova-v3-api

Change-Id: Ic5c14ef83e0ec16f36672377f1daa046044dce78
Support setting block size for block devices

cinder now supports backend with different block sizes. Sometimes
we need to set a specific block size or operations against the
backend will result in I/O errors. Additionally its a good idea
to tune the block sizes to the correct size as it can improve I/O
performance.

The basic disk configuration for libvrit now supports setting the
logical and physical block size of devices.  The block size info
is stored in connection_info of the block_device_mapping table
for later use.

By default it does not set the block sizes which defaults to
512 bytes.

DocImpact:
This feature requires libvirt 0.10.2+ and the QEMU or KVM
hypervisor. If a volume has a custom block size, cinder considers
it required. As such the hypervisor and libvirt version are
checked during the attach_volume call. If the hypervisor is not
supported or the libvirt version is too old the attach is
aborted and an exception is raised.

Change-Id: I77adc96b340680218f82bbef8f9ec14711d26a7f
Fixes Bug #1195913
Add expected_errors for extension certificates v3

Partially implements: bp v3-api-extension-versioning

Change-Id: I3610cdbcca4f465e071e54da2965f4016acea9c5
Fix formatting on scheduler documentation

Change-Id: Ifac98bbd9931d9bf75f73d4263aa77867cf52522
Removed scheduler doc costs section

Since commit 820f43fc (Change-Id
Ie3e7611347c334c359dea98d759345b97c66c9c1)
costs are no longer used, so all references to them have been removed.

Change-Id: I6e02bc47643be9f9dfe9d2e42b2335626bf039e7
xenapi: no image upload retry on certain errors

There are a few upload errors that glance plugin should
not retry upload on, as it will fail again. This patch changes
upload to not retry on the following conditions in addition
to the 401 error that it already handles:

- CONFLICT
- REQUEST_ENTITY_TOO_LARGE
- PRECONDITION_FAILED
- FORBIDDEN

Fixes bug 1203726

Change-Id: I538a4f9b133169b2e398e7dfcb3af58fef204f03
Fix instance_usage_audit_log v3 follow REST principles

Use query parameter 'before' instead of show.
BTW, add expected_errors decorator.

Partially implements bp v3-api-extension-versioning

DocImpact

Change-Id: If1168c01e6342675370acdf278e1c0317aff93d8
Fix Instance objects with empty security groups

This makes sure that a DB instance with an empty list of security
groups does not result in an object with an unset attribute, thus
triggering a lazy load on access (and ultimately an exception).

Related to blueprint compute-api-objects

Change-Id: Ib33b05853e9d067cbac5d3e87824a68e9935b822
Fix typo in compute.rpcapi comments

Change-Id: I76a60b29352e023e5c72d546e144eb330b218b64
Fix migration downgrade 147 with mysql

Determine each service's availability zone and re-insert it back into the
database to undo migration 147 with mysql.

Fixes bug 1207309

Change-Id: I6a96215f9e97874a64f9bcef56c3d32747fb754c
Format CIDR strings as per storage

Make sure the CIDR addresses are formatted in the same way sqlalchemy stores
them.

Fixes bug 1207355

Change-Id: I7b202c44e6e8e973c1753aa33c192a4fcfe762cc
Remove unused variable

Change-Id: I000d6255c5ada5f41dc8e8f9783dea11c1acfca8
Wrong unique key name in 200 migration

Fix bug 1201711.

Wrong name: `uniq_cell_name0deleted`.
Should be : `uniq_cells0name0deleted`.

Change-Id: I9459d8a1c0b64a38bb88728c191d015e38271d3d
Sync models with migrations

Fixed bugs:
- wrong type instead of MediumText (InstanceInfoCache, Instance, ComputeNode),
- skipped indexes (SecurityGroup, Instance),
- wrong length of column (ComputeNodeStat),
- wrong order of columns in index (KeyPair),
- missing name of UniwueConstraint (InstanceGroup).

bp: db-sync-models-with-migrations

Change-Id: Id698fabd553a10326d984f88fc9580d88cd2a22e