No more sercretString dans oauth2

saml/variables.tf

@@ -17,6 +17,21 @@ variable "binding" {
   type        = string
   default     = "post"
 }
+variable "namespace" {
+  type        = string
+}
 variable "labels" {
   type        = map(string)
 }
+variable "group_mapping" {
+  type        = string
+  default     = null
+}
+variable "audience" {
+  type        = string
+  default     = null
+}
+variable "saml_issuer" {
+  type        = string
+  default     = null
+}