CLOUD-96 aws ssh key belong to credential instead of template
CLOUD-96 removed ssh-key from template
CLOUD-103 ssh key is specified with public key
CLOUD-103 public key column is text
CLOUD-103 AWS initializer imports keypair in every region
CLOUD-103 fixed azure side
CLOUD-103 tests fixed
CLOUD-103 fixed azure tests
Merge pull request #229 from sequenceiq/aws-key-to-credential

lgtm