Adding tenant-id while creating Radware ADC service

Adding tenant_id as a parameter when creating Radware ADC service

Changing unit tests to test the udated REST call resource
with tenant as a parameter

Change-Id: I7a3e9bfb492e847195031bb72ef15dae8769e91f
Closes-Bug: #1315815
Ensure tenant owns devices when creating a gateway

This patch adds an ownership check in the create_gateway method.
This kind of check can hardly be enforced leveraging the policy engine.

Change-Id: Iffdc9c570d688f824374281b37efd23761883d26
Closes-Bug: 1319583
Allow vlan type usage for OpenDaylight ml2

The initial OpenDaylight integration with Openstack did not support
vlan isolation so it was not included as a valid type. This change
adds the vlan type as allowed.

Also modified tests to include vlan as supported in the
check_segment().

DocImpact:
Use of VLANs with ML2 and the OpenDaylight mechanism driver
requires OpenDaylight Helium or newer to be installed.

Closes-Bug: #1315475
Change-Id: I52e3c9bfdc93b8786c58954beca105e7498e3f40
Fix typos in ovs_neutron_agent.py

Comments, doc strings, and log messages fixed

Closes-Bug: 1320547
Change-Id: I1cea722ef1839826bdfb12ff15226b97d2f217f9
Merge "Fix typos in ovs_neutron_agent.py"
Merge "Allow vlan type usage for OpenDaylight ml2"
Merge "Adding tenant-id while creating Radware ADC service"
Merge "Ensure tenant owns devices when creating a gateway"