CBQE-2307: upr-test target for testrunner

New target for running upr test suite.
lib/cluster_run_manager.py is used to start nodes

Change-Id: Ic13f7a9f01fe8dbf2bbcedfc6cd8ff46d70d72e0
Reviewed-on: http://review.couchbase.org/38915
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Michael Wiederhold <mike@couchbase.com>