Bug 2824: It is possible that by the time schema transformer tries to create the service chain, service monitor has not yet marked the interfaces with left or right markers. In that case, we need to try again later when those markers are set. So, do not return success unless all necessary interfaces have been found for the service instance
Fix contrail config script backup
Use VncApi to verify results rather than introspect utils
Merge pull request #587 from Juniper/rrugge-master

Fix contrail config script backup
Merge pull request #586 from Juniper/sb

Bug 2824: It is possible that by the time schema transformer tries to cr...
fix build break in query_engine/test
Merge pull request #590 from Juniper/sundar_qe_ut

fix build break in query_engine/test