MB-23229: Add xerror/xattr to the features list
MB-23229: Add xerror/xattr to the features list

Change-Id: I0169ed802fd0638a950024fda658be8ea005a0db
Reviewed-on: http://review.couchbase.org/75208
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Daniel Owen <b3fc0e1a51f252986e60be7da121b74d3ac6845f@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/memcached,daverigby/memcached,daverigby/memcached,daverigby/memcached,couchbase/memcached,couchbase/memcached,couchbase/memcached,couchbase/memcached