MB-13728: Update cli usage for xdcr options
MB-13728: Update cli usage for xdcr options

Change-Id: I8ae780db9c503f9143bb8a52edd8731eba535952
Reviewed-on: http://review.couchbase.org/49997
Reviewed-by: Bin Cui <ed18693fff32c00e22495f4877a3b901bed09041@gmail.com>
Tested-by: Bin Cui <ed18693fff32c00e22495f4877a3b901bed09041@gmail.com>

couchbase/couchbase-cli,couchbase/couchbase-cli