Add support for https requests on nova metadata

Adds new config value for accessing nova metadata api with SSL. In case
nova api requires client certificate other config values were added
providing client certificate and client private key.

DocImpact

Closes-bug: #1293587
Change-Id: I782a12eb77553f4369b782071b4ad19efb82e5e2
ofa_neutron_agent: Fix _phys_br_block_untranslated_traffic

Install the flow to the correct bridge.

Closes-Bug: 1301142
Change-Id: I2aa7ffd6bb297837a39cdd00794af100bf9ab407
Register LBaaS resources to quotas engine

Adding register_quotas=True argument to
resource_helper.build_resource_info() function
in order to register LBaaS resources to quotas engine

This change is actually a continuation of https://review.openstack.org/#/c/69803
change which was already approved

Change-Id: Ib75027ce4a1bea3d453f57b107d29546ec6743e5
Closes-Bug: #1305957
gw_port should be set as lazy='join'

This forces the object to be ready ahead of accessing time.
The change in loading behavior is also beneficial while listing
routers, as reduces the amount of queries being issued. Tests
show a performance gain of 15-30% for router-list times.

As Mr. Aaron Rosen is used to saying: Woot woot!!

Closes-bug: #1309144

Change-Id: Ibae261b91de26ca7c50e3f6c80e9be2a799785a3
Add nova_ca_certificates_file option to neutron

Previously, neutron had no way to pass a certificates file to the
novaclient.  This change is to add that ability, similar to the way
you can pass a certificates file to neutronclient in nova.conf via
neturon_ca_certificates_file.

Change-Id: I1a3f85505eb44bee604900301af79d773e1952a3
Closes-Bug: #1309694
allow delete_port to work when there are multiple floating ips

It is possible to associate multiple floating ip addresses with a single
port through the use of multiple *fixed* ip addresses, e.g.:

    nova boot ... --nic net-id=my-net-id myserver
    nova add-fixed-ip myserver my-net-id
    nova add-floating-ip --fixed-address x.x.x.1 myserver y.y.y.y.1
    nova add-floating-ip --fixed-address x.x.x.2 myserver y.y.y.y.2

In this situation, neutron.db.l3_db.disassociate_floatingips would throw
an exception:

    Exception: Multiple floating IPs found for port <port-id>

This would prevent someone from deleting an instance that was associated
with multiple floating ips.

This patch corrects disassociate_floatingips so that it will
disassociate all floating ips associated with the port, allowing the
delete operation to proceed correctly.

Change-Id: I68a2131fa8ee80828354c9db4ac405c3f77c3b90
Closes-bug: 1302701
ML2 Cisco Nexus MD: Improve Unit Test Coverage

Improve unit test coverage for:
neutron/plugins/ml2/drivers/cisco/ modules.

Current coverage info:
neutron/plugins/ml2/drivers/cisco/nexus/nexus_models_v2      65%
neutron/plugins/ml2/drivers/cisco/nexus/nexus_network_driver 82%
neutron/plugins/ml2/drivers/cisco/nexus/credentials_v2       81%
neutron/plugins/ml2/drivers/cisco/nexus/mech_cisco_nexus     78%
neutron/plugins/ml2/drivers/cisco/nexus/config               75%

With these updates:
neutron/plugins/ml2/drivers/cisco/nexus/mech_cisco_nexus     99%
neutron/plugins/ml2/drivers/cisco/nexus/nexus_db_v2          99%
neutron/plugins/ml2/drivers/cisco/nexus/nexus_models_v2      65%
neutron/plugins/ml2/drivers/cisco/nexus/nexus_network_driver 98%
neutron/plugins/ml2/drivers/cisco/nexus/config               100%

NB: nexus_models_v2.py consists of database definitions and two
customization methods, __repr__ and __eq__.

Change-Id: I0de1cb9e71adffff698e37c8bec5497b88f0f0cd
Closes-Bug: 1267481
Merge "Register LBaaS resources to quotas engine"
Merge "allow delete_port to work when there are multiple floating ips"
Merge "ofa_neutron_agent: Fix _phys_br_block_untranslated_traffic"
Merge "Add support for https requests on nova metadata"
Merge "Add nova_ca_certificates_file option to neutron"
Merge "ML2 Cisco Nexus MD: Improve Unit Test Coverage"
Merge "gw_port should be set as lazy='join'"