validate response of federation APIs (#2408)

* validate json responses

* update deps

* tmp disable header check

* log all the webfinger fails

refactor and filter more malformed requests

* don't set incorrect serverURL strings

* test failing through admin api

* fix server url in fedi tests

* check response.text

* validate json/xml response of all apis

test Content-Type of api response and cleanup

* improve logs

* fix rebase

* cleanup json parser in api tests

* mark the api tests performed by admin

* Separate check for reading and format of serverURL

* test /federation/user/ with wrong username in ci

test/automated/api/package.json

@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "supertest": "^6.0.1",
+    "supertest": "^6.3.2",
     "websocket": "^1.0.32",
     "ajv": "^8.11.0",
     "ajv-draft-04" : "^1.0.0",