Fix L2 agent does not remove unused ipset set

The patch fixes L2 agent does not remove unused ipset set when security
group contains rules for only IPv4 or IPv6.

Change-Id: I375b1683cd763c0a33dc935558c637874d36ffa1
Closes-bug: #1373287
Remove neutron.common.rpc.RemoteError

Remove RemoteError from neutron.common.rpc, which was just mapped
directly to oslo.messaging.RemoteError.

Part of blueprint drop-rpc-compat.

Change-Id: Ic4d7ea0adfd68eb56100e32ce0d8e59aa2aae5b1
Drop neutron.common.rpc.MessagingTimeout

Drop the last neutron.common.rpc exception mapping, MessagingHelper,
which wasn't actually used anywhere anyway.

Part of blueprint drop-rpc-compat.

Change-Id: I43b9b97accff9cc7684146076ba0b5d62302f06e
switch to oslo.serialization

jsonutils has been moved to the oslo.serialization library. in this
patch we bring in oslo.serialization and switch all references to
the new library.

Closes-Bug: #1385353
Change-Id: I2898c4040abb2f208959049708e7bc093cfbaba7
Merge "Remove neutron.common.rpc.RemoteError"
Decrease policy logging verbosity

Log enforced rules only in case policy check has failed.

Change-Id: I1fe8cbc1c9b5084b9cef6aa8329780512d8c7ec2
Closes-Bug: #1385266
enable F811 check for flake8

This change incorporates two cleanups that do not change logic:
- Removes the shadowed unused imports by using the proper oslo.config import
mechanism
- duplicate unit tests have been removed
- duplicate unit test names have been corrected to reflect true test
  nature

Change-Id: Iad7a3373c1f787a2078b932c5f40bb718ad76767
Partial-Bug: 1329017
Merge "Drop neutron.common.rpc.MessagingTimeout"
Merge "switch to oslo.serialization"
Merge "Decrease policy logging verbosity"
Drop usage of RpcProxy from DhcpPluginApi

Drop the usage of the RpcProxy compatibility class from the
DhcpPluginApi RPC client class.  The implementation has been updated
to use the appropariate APIs from oslo.messaging directly.

Part of blueprint drop-rpc-compat.

Change-Id: I81bfd761707c4c587b12877668c4399efe3d652e
Fix client side versions in dhcp rpc API

The dhcp rpc API has two version (1.0 and 1.1).  The proper way to use
versioning for this is to only specify '1.1' from the client side when
you require that the remote side implements at least version '1.1' for
the method to work.  Otherwise, '1.0' should still be specified.  The
previous code specified '1.1' always.

Related to blueprint drop-rpc-compat.

Change-Id: I9468f8f67d80c5d064137f917fc04f9335a3ed55
Merge "Fix L2 agent does not remove unused ipset set"