message: fix: datacatalog model validaiton errors
  Remove null body and headers for RESPONSE_SCHEMA_NOT_IN_SPEC errors
diff: "catalogName": "exampleCatalog"
  },
  "responses": {
  - "200": {
  - "headers": {
  - "Date": "Wed, 13 Sep 2017 17:55:54 GMT",
  - "x-ms-request-id": "a8bb197f-b00f-4add-a847-59f6aa0315ab",
  - "x-ms-correlation-request-id": "acdb3257-c6cb-44f1-8e14-afa3ebf471fa"
  - },
  - "body": null
  - },
  - "202": {
  - "headers": {
  - "Date": "Wed, 13 Sep 2017 17:55:54 GMT",
  - "x-ms-request-id": "a8bb197f-b00f-4add-a847-59f6aa0315ab",
  - "x-ms-correlation-request-id": "acdb3257-c6cb-44f1-8e14-afa3ebf471fa"
  - },
  - "body": null
  - },
  - "204": {
  - "headers": {
  - "Date": "Wed, 13 Sep 2017 17:55:54 GMT",
  - "x-ms-request-id": "a8bb197f-b00f-4add-a847-59f6aa0315ab",
  - "x-ms-correlation-request-id": "acdb3257-c6cb-44f1-8e14-afa3ebf471fa"
  - },
  - "body": null
  - }
  + "200": {},
  + "202": {},
  + "204": {}
  }
  }
  