[cluster_testapp] set all features at once
[cluster_testapp] set all features at once

Instad of running a sequence of enabling one feature at a
time we may enable all of them with a single call to HELLO

Change-Id: If00e7ccb98fa978968fe46535729702211f8479c
Reviewed-on: http://review.couchbase.org/123279
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine