CBD-792: add xperf config with disabled compaction

Change-Id: I1c35eb2ea0b34bc5c99a645bfff57e1f048930b9
Reviewed-on: http://review.couchbase.org/24338
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>
Tested-by: Pavel Paulau <pavel.paulau@gmail.com>