bug #1340668 - analytics_systest uses virtual_machine.sandesh defined in vnsw/agent. Change in this file recently has broken analytics_systest. analytics_systest should not rely on sandesh files defined in other modules. Added sandesh files used for analytics_systest in opserver/test/sandesh

Change-Id: I9c4c816ac158f53807e2c5683af8386e332608bd
Merge "bug #1340668 - analytics_systest uses virtual_machine.sandesh defined in vnsw/agent. Change in this file recently has broken analytics_systest. analytics_systest should not rely on sandesh files defined in other modules. Added sandesh files used for analytics_systest in opserver/test/sandesh"