Update i18n translation for Embrane plugin

All the existing LOG.info, LOG.warning, LOG.error and LOG.critical
messages should have _LI, _LW, _LE and _LC respectively. Also, debug
level log shouldn't be translated. This patch set will cover the
embrane directory.

Change-Id: I89cf8e63311f96c3f1759a6c885d1b98e6fed598
Partial-Bug: #1320867
Update i18n translation for Nuage plugin

Ensure that the LOG hacking rules are enforced on the nuage plugin
directory.

Change-Id: I0a415dfdf81ad337eda0dc8b618b6125b938a1eb
Update i18n translation for Metaplugin plugin

All the existing LOG.info, LOG.warning, LOG.error and LOG.critical
messages should have _LI, _LW, _LE and _LC respectively. Also, debug
level log shouldn't be translated. This patch set will cover the
metaplugin directory.

Change-Id: I34437019fc8ffc38f11114d1d83dce54170ab989
Partial-Bug: #1320867
Fix enable_metadata_network flag

The following patch: 9569b2fe broke the desired functionality of
the enable_metadata_network flag, by not allowing the metadata
proxy to be spawn for 'metadata networks', which are used for
accessing the metadata service when the logical router is not
implemented through the l3 agent.

This patch enables spawning of the metadata proxy for metadata
networks when the appropriate flag is set to True.

The patch also adds rather pedant unit test coverage for the
should_enable_metadata method which previously had no unit test.

Change-Id: I8dca1fce9fbc83e75ba7e4ce948531427bf7e88b
Closes-bug: 1394020
Imported Translations from Transifex

For more information about this automatic import see:
https://wiki.openstack.org/wiki/Translations/Infrastructure

Change-Id: Ic0f2297c07cfc9dcef66df980b2615beac8cb173
Remove RpcProxy class

All users of this class have now been converted to use oslo.messaging
APIs directly, so this compatibility class can be removed.

Part of blueprint drop-rpc-compat.

Change-Id: Ife5c96d2d737694b9e79fe079d62dc48f23c033a
Fix up an old RpcProxy assumption

This patch fixes one last bit of code that assumed that the base
PluginApi used RpcProxy.  This code is now fixed to use the proper
oslo.messaging APIs instead.

Part of blueprint drop-rpc-compat.

Change-Id: I4adc321c07e6b5ad45a01f163b4c7e1ab74bcafd
Convert several uses of RpcCallback

Convert several places in the code that were using the RpcCallback
compatibility class.  This class eased the transition to
oslo.messaging.  This patch drops the usage of this class in favor of
direct usage of the appropriate oslo.messaging API.

Part of blueprint drop-rpc-compat.

Change-Id: I955958e836635d43dabc7b39d050c1418b18cf8f
Remove RpcCallback class

All users of the RpcCallback class have been converted to directly
define the oslo.messaging Target so this compatibility class is no
longer needed.

This is the final change of blueprint drop-rpc-compat.

Change-Id: I25474569850f3f2c176e7eee7aafa7ff0180b809
Merge "Update i18n translation for Embrane plugin"
Merge "Remove RpcProxy class"
Merge "Fix up an old RpcProxy assumption"
Merge "Convert several uses of RpcCallback"
Merge "Remove RpcCallback class"
Merge "Imported Translations from Transifex"
Merge "Update i18n translation for Metaplugin plugin"
Merge "Update i18n translation for Nuage plugin"
Merge "Fix enable_metadata_network flag"