Use KUBE_SERVER_VERSION to report k8s_conformance results

Use the file './env_k8s_version' which is created after
conformance tests, as a bash source file to get the variable
KUBE_SERVER_VERSION and use it for reporting to TestRail
to the correct test suite.

Change-Id: I2131f47a541cb9acfc18c5ea29fc71e5194886bd
1 file changed