made changes to seal blob for 74

Author: gapra-msft

specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-02-10/blob.json

@@ -6125,9 +6125,6 @@
           },
           {
             "$ref": "#/parameters/BlobTagsHeader"
-          },
-          {
-            "$ref": "#/parameters/SealBlob"
           }
         ],
         "responses": {
@@ -9651,7 +9648,8 @@
           "type": "string",
           "format": "date-time-rfc1123"
         },
-        "IsSealed": {
+        "Sealed": {
+          "x-ms-client-name": "IsSealed",
           "type": "boolean"
         },
         "RehydratePriority": {