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

src/Adapters/Storage/Postgres/PostgresClient.js

@@ -20,7 +20,12 @@ export function createClient(uri, databaseOptions) {
 
   if (process.env.PARSE_SERVER_LOG_LEVEL === 'debug') {
     const monitor = require('pg-monitor');
-    monitor.attach(initOptions);
+    try {
+      monitor.attach(initOptions);
+    } catch (e) {
+      monitor.detach();
+      monitor.attach(initOptions);
+    }
   }
 
   if (dbOptions.pgOptions) {