Add rotation permission (#15458)

* Add rotation permission

* Update keys.json

Remove required from lifetimeActions

* Change to expiryTime

Author: qinl-li

specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/examples/UpdateKeyRotationPolicy-example.json

@@ -23,7 +23,7 @@
         }
       ],
       "attributes": {
-        "expirationTime": "P2Y"
+        "expiryTime": "P2Y"
       }
     }
   },

specification/keyvault/data-plane/Microsoft.KeyVault/preview/7.3-preview/keys.json

@@ -1173,7 +1173,7 @@
       },
       "put": {
         "tags": [
-          "keys"
+          "Keys"
         ],
         "operationId": "UpdateKeyRotationPolicy",
         "summary": "Updates the rotation policy for a key.",

specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-06-01-preview/keyvault.json

@@ -1117,7 +1117,8 @@
               "restore",
               "recover",
               "purge",
-              "release"
+              "release",
+              "rotate"
             ],
             "x-ms-enum": {
               "name": "KeyPermissions",