CBD-688: Revise cli 2.0 api support

Change-Id: I6d00e7e7a0257731d8330575e419fb3fe12e1a60
Reviewed-on: http://review.couchbase.org/24612
Tested-by: Bin Cui <bin.cui@gmail.com>
Reviewed-by: Bin Cui <bin.cui@gmail.com>