Creates a new alias.
This method creates a new alias with the given Name and associates it with the CMK specified by KeyId.
The value passed for Name must begin with alias/, and must consist solely of alphanumeric characters, forward slashes /, underscores _, and hyphens -. The final name must not begin with alias/aws/, which is a reserved prefix.
The value passed for the KeyId parameter must be the Id or ARN of a CMK in the current account and Region.