Updated openstack/openstack
Project: openstack/nova  e7999d992daa0c08e4771d5e4611c6d3b049683d

network:Separate the translatable messages into different catalogs

oslo.i18n uses different marker functions to separate the
translatable messages into different catalogs, which the translation
teams can prioritize translating.  For details, please refer to:
http://docs.openstack.org/developer/oslo.i18n/guidelines.html#guidelines-for-use-in-openstack

There were not marker fuctions some places in directory network.
This commit makes changes:
* Add missing marker functions
* Use ',' instead of '%' while adding variables to log messages

Change-Id: Id19436f4226bb60baef65974a62641095e334b1f