MB-9773: Make help text more ready to use
MB-9773: Make help text more ready to use

Most of cli commands need -u and -p options

Change-Id: I7e4e374b38845c4e640270681488450ef1c62082
Reviewed-on: http://review.couchbase.org/31638
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Tested-by: Bin Cui <ed18693fff32c00e22495f4877a3b901bed09041@gmail.com>

couchbase/couchbase-cli,couchbase/couchbase-cli