Terminates a cluster running on AWS.
>>> ./EHPC-Client --terminate -d=domain Options
--keep-main-node Keeps main node alive and kills all the extra nodes
Terminates ALL cluster’s nodes on ec2......com
./EHPC-Client --terminate --domain='ec2.....com'
Terminates all the extra nodes on ec2......com but keep the main node alive
./EHPC-Client --terminate --domain='ec2.....com' --keep-main-node