update: rename variable to make it for broad use.

Signed-off-by: Wen Zhou <[email protected]>

README.md

@@ -66,7 +66,7 @@ Additionally installing `Authorino operator` & `Service Mesh operator` enhances
         sourceNamespace: openshift-marketplace
       EOF
       ```
-      If user would prefer skipping group "odh-admin" to be created by DSCI CR automatically, explicitly set env variable ODH_DISABLE_USERGROUP to "true". example:
+      If user would prefer skipping group "odh-admin" to be created by DSCI CR automatically, explicitly set env variable ODH_USE_EXTERNAL_AUTH to "true". example:
 
     ```console
       cat <<EOF | oc create -f -
@@ -82,7 +82,7 @@ Additionally installing `Authorino operator` & `Service Mesh operator` enhances
         sourceNamespace: openshift-marketplace
         config:
           env:
-            - name: "ODH_DISABLE_USERGROUP"
+            - name: "ODH_USE_EXTERNAL_AUTH"
               value: "true"
       EOF
 

controllers/dscinitialization/dscinitialization_controller.go

@@ -202,7 +202,7 @@ func (r *DSCInitializationReconciler) Reconcile(ctx context.Context, req ctrl.Re
 		switch platform {
 		case cluster.SelfManagedRhods:
 			// Check if user opted for disabling creating user groups
-			if os.Getenv("ODH_DISABLE_USERGROUP") == "true" {
+			if os.Getenv("ODH_USE_EXTERNAL_AUTH") == "true" {
 				log.Info("DSCI disabled usergroup creation")
 			} else {
 				err := r.createUserGroup(ctx, instance, "rhods-admins")
@@ -239,7 +239,7 @@ func (r *DSCInitializationReconciler) Reconcile(ctx context.Context, req ctrl.Re
 			}
 		default:
 			// Check if user opted for disabling creating user groups
-			if os.Getenv("ODH_DISABLE_USERGROUP") == "true" {
+			if os.Getenv("ODH_USE_EXTERNAL_AUTH") == "true" {
 				log.Info("DSCI disabled usergroup creation")
 			} else {
 				err := r.createUserGroup(ctx, instance, "odh-admins")