MB-7692: replace membase-cli with couchbase-cli

couchbase-cli is cloned out of membase-cli since 2.0.2

Change-Id: I2bc2ee259a84bf8361f933722c1b5f2c5d514ff0
Reviewed-on: http://review.couchbase.org/24714
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>