add x-ms-enum to Enryption and Visibility

Author: mjudeikis

specification/redhatopenshift/resource-manager/Microsoft.RedHatOpenShift/preview/2021-09-01-preview/redhatopenshift.json

@@ -560,7 +560,11 @@
         "Disabled",
         "Enabled"
       ],
-      "type": "string"
+      "type": "string",
+      "x-ms-enum": {
+        "name": "EncryptionAtHost",
+        "modelAsString": true
+      }
     },
     "IngressProfile": {
       "description": "IngressProfile represents an ingress profile.",
@@ -871,7 +875,11 @@
         "Private",
         "Public"
       ],
-      "type": "string"
+      "type": "string",
+      "x-ms-enum": {
+        "name": "Visibility",
+        "modelAsString": true
+      }
     },
     "WorkerProfile": {
       "description": "WorkerProfile represents a worker profile.",