[WIP] Enable test suite to be randomized (#7265)

* initial run

* Update ParseGraphQLServer.spec.js

* temporarily enable reporter

* Bump retry limit

* fix undefined database

* try to catch error

* Handle LiveQueryServers

* Update Config.js

* fast-fail false

* Remove usage of AppCache

* oops

* Update contributing guide

* enable debugger, try network retry attempt 1

* Fix ldap unbinding

* move non specs to support

* add missing mock adapter

* fix Parse.Push

* RestController should match batch.spec.js

* Remove request attempt limit

* handle index.spec.js

* Update CHANGELOG.md

* Handle error: tuple concurrently updated

* test transactions

* Clear RedisCache after every test

* LoggerController.spec.js

* Update schemas.spec.js

* finally fix transactions

* fix geopoint deadlock

* transaction with clean database

* batch.spec.js

spec/GridFSBucketStorageAdapter.spec.js

@@ -4,7 +4,6 @@ const GridFSBucketAdapter = require('../lib/Adapters/Files/GridFSBucketAdapter')
 const { randomString } = require('../lib/cryptoUtils');
 const databaseURI = 'mongodb://localhost:27017/parse';
 const request = require('../lib/request');
-const Config = require('../lib/Config');
 
 async function expectMissingFile(gfsAdapter, name) {
   try {
@@ -395,8 +394,9 @@ describe_only_db('mongo')('GridFSBucket and GridStore interop', () => {
   });
 
   it('should handle getMetadata error', async () => {
-    const config = Config.get('test');
-    config.filesController.getMetadata = () => Promise.reject();
+    const gfsAdapter = new GridFSBucketAdapter(databaseURI);
+    await reconfigureServer({ filesAdapter: gfsAdapter });
+    gfsAdapter.getMetadata = () => Promise.reject();
 
     const headers = {
       'X-Parse-Application-Id': 'test',