Separate Configuration from Freescale SDN ML2 mechanism Driver

- In the current implementation, CRD configuration is existing
  within the code of ML2 mechanism driver.

- When any other plugin/driver (like, Freescale FWaaS Plugin) need
  to use this configuration, it needs to duplicate the complete configuration.

- So the CRD configuration is moved to a separate file for use
  in other plugin/drivers.

- Unit testing of this MD is also updated.

Closes-Bug: #1368033

Change-Id: I488fee47803a494aae9df42f9c59fffa9843e727
Deletes FIP agent gw port when last VM is deleted

This patch deletes the FIP agent gateway port in
the plugin, when the last VM with FIP using this
FIP agent gw port on a Compute node gets deleted.

Closes-bug: #1367588

Change-Id: I71a9fa48544fa4bbd08ac6d83c99e6542c818009
Merge "Separate Configuration from Freescale SDN ML2 mechanism Driver"
Merge "Deletes FIP agent gw port when last VM is deleted"