MB-9945: Set correct UPR port in ./cluster_run

The couchdb component needs to know on which port it can
find UPR. It's the same port as memcached runs on.

This change can be merged on the master branch as an
additional setting shouldn't do any harm if it's not
used.

Change-Id: I5d01652bf7f51e6dece5f1235585a0fee3e8bd58
Reviewed-on: http://review.couchbase.org/32600
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Volker Mische <volker.mische@gmail.com>