Improve some plugins help strings

For consistency add a "." everywhere, remove an extra space at end of a
string, add missing space between strings, fix descriptions and
capitalization.

Change-Id: Ib1523352b19768425263c09855d6a218e06e588a
Imported Translations from Transifex

Change-Id: I8676cc834921e62620d914c15755102fc637f7d3
Fix a recent ipv6 UT regression

This fixes UT failures on systems without the procfs entry
by adding appropriate mocking.  The problem introduced by
the following change:
    https://review.openstack.org/#/c/116826/
    commit 0c963f6140237d8d3f361c6aaa7d2a6b656504db

Also, add a test for the case which the change in question fixed.

Closes-Bug: #1363805
Related-Bug: #1361542
Change-Id: I72842c3446f3275e2288adc411540ab036025ed0
ML2: Fix release of network segments to allocation pools

The recent merge of https://review.openstack.org/#/c/115025/ broke the
release of network segments to allocation pools on network delete,
resulting in network creates eventually failing with
NoNetworkAvailable exceptions. The network_delete() code is rearranged
to properly release the network segments, and a unit test is updated
to verify that the type drivers' release_segment() method is called.

Partially implements: Blueprint ml2-type-driver-refactor

Change-Id: Ica5f11b2012dedfcc097f34f1515f5f3ca208fd2
l2pop: Allow network types overridable

Currently "tunnel_types" is used for two different purposes; l2pop and
check_segment_for_agent.  This commit introduces a new agent
configuration "l2pop_network_types" to allow overriding the former.

This will be used by ofagent, which wants l2pop info for TYPE_VLAN
as well.

Related: blueprint ofagent-l2pop
Related: blueprint ofagent-merge-bridges
Change-Id: Ia83a94b6661aa36afa8bfeb073101171ffde62a9
Remove reference to cisco_cfg_agent.ini from setup.cfg again

No sample .ini file is included, causing install to fail.
Remove the reference again.

Change-Id: I97ffe464e4eb9689ee290c3c95ac19d4e09029e2
Closes-bug: #1351466
Add functional test for IptablesManager

Introduce test of IptablesManager using filtering of ICMP packets in
namespaces.

Partial-bug: #1243216

Change-Id: I90ab0d397780247de619bd90f5febd0e59b84fc7
Apic drivers enhancements (second approach): Topology

    - Handle topology dynamically

Implements blueprint: apic-driver-enhancements

Change-Id: I80ae799bf7c18939e58cb5c1ea8eb441633285df
Merge "l2pop: Allow network types overridable"
Merge "Remove reference to cisco_cfg_agent.ini from setup.cfg again"
Prevent SystemExits when running tests

Adds a check for SystemExit exceptions during tests
to convert them into a test failure rather than an exit.
Includes the traceback in the failure so the source of
the exit can be located.

Related-Bug: #1364171
Change-Id: I2c7d9010ebf935d39ed58fe7a6fc4a1a867e2548
Merge "Imported Translations from Transifex"
Merge "Add functional test for IptablesManager"
Merge "Improve some plugins help strings"
Merge "Apic drivers enhancements (second approach): Topology"
ofagent: Local arp responder for VLAN

Implement local arp responder for non-tunnel network types.
Enable it for VLAN by requesting l2pop for VLAN.

Related: blueprint ofagent-l2pop
Related: blueprint ofagent-merge-bridges
Change-Id: I2f200a1ae2bd769ea1f83fe65e58e82325ed92b0
Merge "ML2: Fix release of network segments to allocation pools"
Merge "Fix a recent ipv6 UT regression"
Merge "ofagent: Local arp responder for VLAN"
Merge "Prevent SystemExits when running tests"