cmd: fix bug around required params check
cmd: fix bug around required params check

This fixes issue for map type of required parameters as seen in the
createTags API where previously an API request would fail when
tags[0].<something> was passed.

Signed-off-by: Rohit Yadav <902b9eb5dd62819678163bd5e00fbf0cbc7c264b@shapeblue.com>

apache/cloudstack-cloudmonkey,apache/cloudstack-cloudmonkey