Fixes if statement inefficiency in quantum.agent.linux.interface

Changed logic of checking the existance of a port value

Change-Id: Id06447a753fd0201ef44a047657bd747ce18d546
Remove redunant key list generation in Cisco plugin

Evaluates existance of key directly on dictionary.

Fixes bug #1110957

Change-Id: I9b46a991ab9c764d7451cc122d208e06778c1ee1
Merge "Remove redunant key list generation in Cisco plugin"
Adds support of TCP protocol for LBaaS VIPs.

Adds validation of supplied protocols for VIPs and Pools at API and DB levels.
Modifies the schema of the database to allow storing TCP VIPs.

Change-Id: Idab3139f280b5f0a16633974c05f88d70fb8d683
Fixes: bug #1100724