add x-ms-enum to storage (Azure#17027)

* add x-ms-enum to storage

* add name

* fix again

* change one parameter name back to see if it breaks

* change the parameter name back

Author: ArcturusZhang

specification/storage/resource-manager/Microsoft.Storage/stable/2021-06-01/blob.json

@@ -1564,6 +1564,10 @@
       "enum": [
         "default"
       ],
+      "x-ms-enum": {
+        "name": "ImmutabilityPolicyName",
+        "modelAsString": false
+      },
       "x-ms-parameter-location": "method"
     },
     "BlobServicesName": {
@@ -1575,6 +1579,10 @@
       "enum": [
         "default"
       ],
+      "x-ms-enum": {
+        "name": "BlobServicesName",
+        "modelAsString": false
+      },
       "x-ms-parameter-location": "method"
     }
   },

specification/storage/resource-manager/Microsoft.Storage/stable/2021-06-01/file.json

@@ -1042,6 +1042,10 @@
       "enum": [
         "default"
       ],
+      "x-ms-enum": {
+        "name": "FileServicesName",
+        "modelAsString": false
+      },
       "x-ms-parameter-location": "method"
     },
     "ShareName": {

specification/storage/resource-manager/Microsoft.Storage/stable/2021-06-01/queue.json

@@ -525,6 +525,10 @@
       "enum": [
         "default"
       ],
+      "x-ms-enum": {
+        "name": "QueueServiceName",
+        "modelAsString": false
+      },
       "x-ms-parameter-location": "method"
     },
     "QueueName": {

specification/storage/resource-manager/Microsoft.Storage/stable/2021-06-01/table.json

@@ -460,6 +460,10 @@
       "enum": [
         "default"
       ],
+      "x-ms-enum": {
+        "name": "TableServiceName",
+        "modelAsString": false
+      },
       "x-ms-parameter-location": "method"
     },
     "TableName": {