Load tables of service plugins when migration auto generation

When we run "neutron-db-manage revision --autogenerate", it detects
table deletion of service plugins even when they are configured.
We need to load tables of service plugins to teach alembic such
tables exist.

Change-Id: I9186d36496069c8253683bd200326b80a6565fa6
Closes-Bug: #1218338
Merge "Load tables of service plugins when migration auto generation"
Corrects error in ml2 rpc log message formatting

Change-Id: Ic6f445408ef83c2aa0376c94f395363503412814
Imported Translations from Transifex

Change-Id: I503e7e0273a8b344646a99373ddd87451ed7fd75
Merge "Corrects error in ml2 rpc log message formatting"
Merge "Imported Translations from Transifex"
Create RPC connection before modifying OVS bridges

On startup, the agent removes and readds flows to the OVS bridges.  If
an RPC setup error exits the process prematurely, this can leave the
bridges in an unsafe state.  It is better to set the RPC communication
up before making changes to the host system.

Closes-Bug: 1217980
Change-Id: Ib9bbb864b9129bb7b1376a150a37a0c07908d74b
Signed-off-by: Stephen Gran <stephen.gran@guardian.co.uk>
Fix comment typo s/no/so

Change-Id: I1c7b0834202caca6b3bb79acd243c96b865583bc
Merge "Create RPC connection before modifying OVS bridges"