COE CSIT : Add versioning for the golang binaries

COE CSIT currently uses ansible playbook to bring up the deployment for tests.

In https://github.com/opendaylight/integration-test/blob/master/csit/variables/coe/coe_play.yaml#L32 we can see that we always checkout the master repo to build golang binaries, for running CSIT. Since integration/test repo also does not have the concept of branches, this particular playbook is causing trouble to all COE branches CSIT. If something is broken in master, CSITs for Fluorine and Oxygen also  shows up as broken. We need to find a mechanism to inject the current STREAM into the playbook.