MB-7287: add xperf config with disabled compaction

Change-Id: Ic44da583256aea49c704c96069ade698bde9265a
Reviewed-on: http://review.couchbase.org/25336
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>
Tested-by: Pavel Paulau <pavel.paulau@gmail.com>