The cluster-wide encryption feature now
supports KMIP (Key Management Interoperability Protocol)
kms.
KMIP is an extensible communication protocol that defines
message formats for the manipulation of cryptographic keys
on a key management server.
For more information, refer:
https://en.wikipedia.org/wiki/Key_Management_Interoperability_Protocol
Signed-off-by: Rakshith R <rar@redhat.com>