Unit test cases for UVE Bandwidth usage of physical interface
Merge branch 'master' into ashoksr_ut
Merge branch 'master' into ashoksr_ut
Merge branch 'master' into ashoksr_ut
-Add UT cases to verify error code returns from vrouter
-Add more UT cases for Vrouter UVE info verification
-Move code required for UT from agent_stats_collector.cc/h
 to agent_stats_collector_test.cc/h
Merge branch 'master' into ashoksr_ut
Address review comments for UT
Merge pull request #330 from Juniper/ashoksr_ut

More Unit test cases for kstate and UVE