CBQE-0: fix replication_with_ddoc_compaction in uniXdcr, biXdcr tests

Change-Id: Iec1e6d352c088cf45b70fdcfaa43b7db2e24f95f
Reviewed-on: http://review.couchbase.org/35096
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>