Refactor: fix ioctl_get_executor
Refactor: fix ioctl_get_executor

Call the Request method to fetch the key to be prepared
to receive frame extras

Change-Id: If7bd71304aca3b7cd3ffe02b77840798c5663e1d
Reviewed-on: http://review.couchbase.org/101299
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Jim Walker <1cd02e31b43620d7c664e038ca42a060d61727b9@couchbase.com>

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