Extending quota support neutron LBaaS entities

Note: This change is a continuation of the abandoned
      change https://review.openstack.org/#/c/59192/
      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 python-neutronclient package.
Another one is for neutron project, another for tempest project
and another one for horizon/openstack-dashboard project.

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

Change-Id: I2bfb974d513bd21b4dac6c90ddc6ede19797caf9
Implements: blueprint neutron-quota-extension
Remove unused imports

Remove unused imports in doc/source/conf.py

Change-Id: Ia21f8952b36ae74b1c2d3bfd10c0a4a04a390faa
Closes-Bug: #1265266
Replace assertEqual(None, *) with assertIsNone in tests

Replace assertEqual(None, *) with assertIsNone in tests to have
more clear messages in case of failure.

Change-Id: I442951deb2bc6df199a1dd76142f71fc92e6f745
Closes-Bug:#1280522
Enable to select specific network service type

Network service type is selected as 'network' statically.
This will select the service_type from environment variables or CLI options.
The option works like the service type option in the novaclient.

Implements blueprint specify-service-type
Change-Id: If21bd2b5cb35da5bcabca79aa0567870331a3a6f
Python 3: fix a call to ugettext()

In Python 3, ugettext() does not exist and gettext() should be used instead.

Closes-Bug: 128485
Change-Id: Id9f51f0d630ef0c92fc315253c45d3abba356cd1
Print human friendly string as an error message

This commit also removes a blank line displayed
when error_dict['detail'] is empty.

When 403 is returned, Forbidden exception is raised from
HTTPClient (neutronclient/client.py). There is no reason
this exception is raised by it. By this commit v2_0.client
now handles 403 response to show human friendly message
by parsing Neutron 2.0 -specific error format.

Change-Id: Iefbd7db094267fe3799ebf4713e142e62c63174c
Closes-Bug: #1246271
New exception when auth_url is not specified

Certain scenarios into the neutron client will not specify the
auth_url.  This is typically when a token is specified.  However, when
the token is expired the neutron client will attempt to refresh the
token.  Users of this may not have passed in all of the required
information for this reauthentication to properly occur.

This code fixes an error that occurs in this flow where the auth_url
(which is None) is appended to another string.  This results in a core
Python error.

The update will provide a more targetted error message specifying to
the user that the auth_url needs to be specified.  An associated unit
test is also included to validate this behavior.

Change-Id: I577ce0c009a9a281acdc238d290a22c5e561ff82
Closes-Bug: #1241275
Updated from global requirements

Change-Id: I24869d188b7ecdc2a08ed10e1aafdeee2914d127
Merge "Python 3: fix a call to ugettext()"
Use six.moves.urllib.parse to replace urlparse

Import six.moves.urllib.parse as urlparse for python3 compatible.

Change-Id: Icc6dc92c4d4016b8a4f1118220a51415d2b5feb0
Closes-Bug:#1279611
Merge "Print human friendly string as an error message"
Merge "Updated from global requirements"
Merge "New exception when auth_url is not specified"
CLI support for NSX gateway devices

Related to blueprint nsx-remote-net-gw-integration

Change-Id: Iedd080a29e281355420ace955fb09d196b54a316
Updated from global requirements

Change-Id: I54601b68bdf8660990efa82cdd8c961e7aff990c
Empty file shouldn't contain copyright nor license

According to policy change in HACKING:
http://docs.openstack.org/developer/hacking/#openstack-licensing
empty files should no longer contain copyright notices.

Change-Id: Ibda6e7650fcbe352a46d5b8bb259abd264804ba6
Closes-Bug: #1262424
Merge "Replace assertEqual(None, *) with assertIsNone in tests"
Merge "Updated from global requirements"
Merge "Empty file shouldn't contain copyright nor license"
Merge "Use six.moves.urllib.parse to replace urlparse"