Extending quota support for neutron LBaaS entities

Note: This change is a continuation of abandoned
      change https://review.openstack.org/#/c/58720/
      Previous change was abandoned due to rebase problem.

Extending quota mechanism to support neutron
LBaaS entities. Adding quota for vips, pools, members
and health monitors.

This is one of four changes related to the BP.
This one is for neutron project.
Another one is for python-neutronclient package,
another one for tempest,
and another one for horizon/openstack-dashboard project

See blueprint neutron-quota-extension for another two changes.

Change-Id: I64a1d3647a4eb21833266346377416638667a931
Implements: blueprint neutron-quota-extension
Imported Translations from Transifex

Change-Id: I1417148b8fffe3ccb12ea7435997d6b43197b8f8
Updated from global requirements

Change-Id: I194bd7c742152739717882774fef61174ccda9b9
Merge "Imported Translations from Transifex"
Merge "Updated from global requirements"
Merge "Extending quota support for neutron LBaaS entities"