Allow single server instance in test suite (#7262)

* initial pass

* reconfigureServer when needed

* finish postgres tests

* mongo tests

* more tests

* clean up

* re-add skipped test

* Fix transaction tests

* handle batch

* AuthenticationAdapter fix

* More reconfiguration

* clean up

* properly terminate cli servers

* handle Parse.Push

* Flaky PushController

* ensure reconfigureServer when changed

* fix postgres tests

* remove console.log

* LiveQuery spec remove duplicates and listeners

spec/index.spec.js

@@ -163,7 +163,8 @@ describe('server', () => {
     });
   });
 
-  it('can report the server version', done => {
+  it('can report the server version', async done => {
+    await reconfigureServer();
     request({
       url: 'http://localhost:8378/1/serverInfo',
       headers: {
@@ -177,7 +178,8 @@ describe('server', () => {
     });
   });
 
-  it('can properly sets the push support', done => {
+  it('can properly sets the push support', async done => {
+    await reconfigureServer();
     // default config passes push options
     const config = Config.get('test');
     expect(config.hasPushSupport).toEqual(true);