SSHKeySpec controls the behavior of the ssh key generator.
comment
string
Comment specifies an optional comment for the SSH key
keySize
integer
KeySize specifies the key size for RSA keys (default: 2048) and ECDSA keys (default: 256).
For RSA keys: 2048, 3072, 4096
For ECDSA keys: 256, 384, 521
Ignored for ed25519 keys
minimum: 256
maximum: 8192
keyType
string
KeyType specifies the SSH key type (rsa, ecdsa, ed25519)
enum: rsa, ecdsa, ed25519