Fix incorrect default paramater in migration

Migration 5446f2a45467_set_server_default try to set incorrect default
boolean value on Integer column cisco_network_profiles.

Closes-bug: #1341518

Change-Id: I594a6811af23fced7105252f47d72232bf37184c
Allow to import _LC, _LE, _LI and _LW functions directly

_LC, _LE, _LI, _LW are translation helper functions. This change updates
hacking rules to allow importing them directly:

    from neutron.openstack.common.gettextutils import _LC
    from neutron.openstack.common.gettextutils import _LE
    from neutron.openstack.common.gettextutils import _LI
    from neutron.openstack.common.gettextutils import _LW

neutron.policy module has been updated as an example of _LE, _LI and
_LW uses.

Change-Id: I11cba6bca48a179945385fce69e6f642270f5563
Fix DVR regression for ofagent

Background:
    ML2 plugin sometimes uses truncated port uuids.
    For example, in the case of ofagent and linuxbridge,
    if port id is 804ceaa1-0e3e-11e4-b537-08606e7f74e7,
    an agent would send "tap804ceaa1-0e" to the plugin.
    ML2 plugin's _device_to_port_id() would restore it to
    "804ceaa1-0e".  While it's still truncated, ML2 plugin's
    get_port() handles that by using "startswith".

The recently merged DVR change (https://review.openstack.org/#/c/102332/)
assumes that port_id is always a complete uuid (it's the case
for openvswitch) and fails to handle the above mentioned case.
This commit fixes the regression.

Change-Id: I9c0845be606969068ab5d13c0165e76760378500
Closes-Bug: #1343750
Merge "Allow to import _LC, _LE, _LI and _LW functions directly"
Merge "Fix DVR regression for ofagent"
Merge "Fix incorrect default paramater in migration"