CBQE-1450 - bucket creation with names as mentioned in MB-5844(.delete,isasl.pw,ns_log,_replicator.couch.1,_users.couch.1)

Change-Id: I6a540333721449c967296948de86f16ed2a6567a
Reviewed-on: http://review.couchbase.org/32809
Reviewed-by: Meenakshi Goel <meenakshi.goel@globallogic.com>
Tested-by: Meenakshi Goel <meenakshi.goel@globallogic.com>