adding lbaas test cases
Fixed the review comments
1. Added Active Stnadby verification as seperate function
2. Added pool UUID in grep cmd for net ns and haproxy
Fixing the typo

Added the verification to check netns got deleted and haproxy got killed after vip delete
Fixing the issue with verify_vm_not_in_agent
printing request version
Merge pull request #124 from stnaik/stnaik_lbaas_test

adding lbaas test cases
Resolve conflicts with lbaas code merge