Revert 60c8ba47e4dee05305d2c9ff68f57d91aabbbdc6 as contrail-api/ifmap fate share still.

If contrail-api is stopped after advertising ifmap to discovery, further updates
received by other api-servers is not reflected to local ifmap server.
If control-nodes are connected to this ifmap server they never get
these updates.

Closes-Bug: #1395949

Change-Id: I7845a16b01e24a7c333cba9ebc8575c29ddb3c88
Merge "Revert 60c8ba47e4dee05305d2c9ff68f57d91aabbbdc6 as contrail-api/ifmap fate share still." into R2.0