Add ssh private key to CLI (#2265)

api/credentials/ssh_private_key_attributes.gen.go

@@ -0,0 +1,8 @@
+// Code generated by "make api"; DO NOT EDIT.
+package credentials
+
+type SshPrivateKeyAttributes struct {
+	Username       string `json:"username,omitempty"`
+	PrivateKey     string `json:"private_key,omitempty"`
+	PrivateKeyHmac string `json:"private_key_hmac,omitempty"`
+}