CFY-988 now raising a nonrecoverable error if ssh key for agent isnt found
CFY-988 moved keypair file existence check elsewhere
CFY-988
Merge pull request #111 from cloudify-cosmo/CFY-988-raise-Nonrecoverable-error-if-ssh-key-for-agent-not-found

CFY 988 raise Nonrecoverable error if ssh key for agent not found