sync periodic_task fix from incubator

Set the value of time the periodic task was last run to a multiple of the
spacing value rather than the actual last time run. This ensures tasks runs
regularly but avoids synchronizing that interval with other nodes.

This patch also removes the coalescing of tasks which are _nearby_ (0.2
seconds away).

4dbd3aa Make periodic tasks run on regular spacing interval
21249f1 Fix parenthesis typo misunderstanding in periodic_task

Change-Id: I8873545578f104fd204fbc25493350128b2bc8d4
update vsm credential correctly

Today if we modify the n1kv VSM credential in the cisco_plugins.ini, the
older VSM ip address remains in the db, and all requests are sent to
the older VSM. This patch deletes all n1kv VSM credentials on neutron
start up before adding the newer VSM credentials. Hence making sure
that there is only one n1kv VSM IP address and credential in the db.

Change-Id: I772a86bf896a1d3d9c69c545ce6918b0fe3a2e48
Closes-Bug: #1341014
Log methods using rpc communcation

In Icehouse was used rpc library from oslo-incubator. Because the code
wasn't mature enough it was running in DEBUG mode. After migrating to
oslo.messaging we don't need to have debug level in oslo.messaging but
it's good to have communication logged.

Closes-Bug: #1340696
Change-Id: I4f68545053912f96affc1bbcd64fcd7efe8d18c0
VMWare: don't notify on disassociate_floatingips()

L3 agent notifications don't make sense for NSX VMWare plugin since
there is no L3 agent in such setup, so disabling them here.

Updated a unit test to check that notification is indeed not requested.

Change-Id: I9c7c32d02d466098d22df8f10448361c3d99174c
Related-Bug: 1330955
Add rule for updating network's router:external attribute

Set admin_only rule for update_network:router:external in policy.json

Also, change the default value of router:external from attr.ATTR_NOT_SPECIFIED
to False, because each time we try to get or update a network the dict with
its attributes is extended by _extend_network_dict_l3 function which adds
router:external=False to the dict if this attribute is not specified.
Thus, if the default value is not specified, router:external is considered
to be updated in any case and the policy rule is applied.

Change-Id: I899d98c7d8c9d9863ac5d8f992b6a2d507ec4482
Closes-Bug: 1338880
ML2 mechanism driver for SR-IOV capable NIC based switching, Part 2

This set of changes introduces SRIOV NIC Agent to run with
ML2 mechanism driver for SR-IOV capable NIC based switching.
This is the second part of a 2 part commit.

The review is submitted in two parts:
- Part 1
    The Mechanism Driver to support port binding for SR-IOV virtual
	functions of SRIOV capable switching NICs.

- Part2 (this part)
    The SRIOV NIC Based L2 Agent.
	Use  configurable list of mappings physical_networks to PF
        interfaces and configurable list of mappings PF interfaces
        to list of excluded VFs to get list of Virtual Functions that agent should manage.
	Current implementation supports admin state updates.

Co-authored-by: Samer Deeb <samerd@mellanox.com>
Partially implements: blueprint ml2-sriov-nic-switch

Change-Id: I533ccee067935326d5837f90ba321a962e8dc2a6
Correct misspelled variable name

In neutron/services/loadbalancer/drivers/embrane/driver.py,
"persistence" is wrote with an "a", not with an "e".
This patch fix this.

Change-Id: I8da0d6d28c188c73ed844a8a0c7a523dae713344
Updated from global requirements

Change-Id: Ibdbdae16eb5b15cdfa5ca194dc852abfde14f74d
Merge "Correct misspelled variable name"
Merge "Log methods using rpc communcation"
Merge "ML2 mechanism driver for SR-IOV capable NIC based switching, Part 2"
Merge "Add rule for updating network's router:external attribute"
Handle bool correctly during _extend_extra_router_dict

Ensure that extension attributes are always used to
override the chosen defaults. This was not working
in the case of default boolean True, as the testing
condition was wrong.

Closes-bug: #1348479

Change-Id: I22bce82c6078a96c0eb4a67e6decb6e9205721a8
Merge "Updated from global requirements"
Merge "sync periodic_task fix from incubator"
Merge "VMWare: don't notify on disassociate_floatingips()"
Merge "update vsm credential correctly"