hms: stop trying to get the UUID on success
hms: stop trying to get the UUID on success

This would result in more traffic to the HMS than necessary.

I tested this manually by adding logging statements and watching a
long-running test repeatedly fetch from the HMS.

Change-Id: I71156c0756bac8fdb73929a740cc0d9093bc29c2
Reviewed-on: http://gerrit.cloudera.org:8080/14258
Reviewed-by: Adar Dembo <866ca730bfc7f544e3ebce604ceeba4879f23df0@cloudera.com>
Tested-by: Kudu Jenkins

helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu,helifu/kudu