[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/ParseHooks.spec.js

@@ -8,9 +8,8 @@ const bodyParser = require('body-parser');
 const auth = require('../lib/Auth');
 const Config = require('../lib/Config');
 
-const port = 12345;
+const port = 34567;
 const hookServerURL = 'http://localhost:' + port;
-const AppCache = require('../lib/cache').AppCache;
 
 describe('Hooks', () => {
   let server;
@@ -19,7 +18,7 @@ describe('Hooks', () => {
     if (!app) {
       app = express();
       app.use(bodyParser.json({ type: '*/*' }));
-      server = app.listen(12345, undefined, done);
+      server = app.listen(port, undefined, done);
     } else {
       done();
     }
@@ -383,7 +382,7 @@ describe('Hooks', () => {
           }
           const hooksController = new HooksController(
             Parse.applicationId,
-            AppCache.get('test').databaseController
+            Config.get('test').database
           );
           return hooksController.load();
         },