Refactor logging to provide common logger from LoggerAdapter (#2478)

* Refactor logging to provide common logger from LoggerAdapter

Move logger logic de WinstonLoggerAdapter

Further improvements in configuration

Use logger instead of getLogger

- Removes PLog module

Reverts name changes

nits

* Adds additional logging levels as requirements

* Adds tests for logging configuration

* removes flaky test

* investigate...

* further investigation

* Adds silent option to disable console output

* Restores logs with VERBOSE in tests

* Expose controller instead of adapter, reduces method requirements for adapter

* Shuffles initializations around

* Fix doc

* Load cloudCode last to make sure the logger is available

* Adds test to make sure we can load an adapter from npm module

* extract defaults

* Adds defaultMongoURI to defaults

* fix defaults values

* Proper error for PG failures

* Disable flaky test

src/index.js

@@ -1,10 +1,10 @@
 import ParseServer          from './ParseServer';
-import logger            from './logger';
 import S3Adapter            from 'parse-server-s3-adapter'
 import FileSystemAdapter    from 'parse-server-fs-adapter'
 import InMemoryCacheAdapter from './Adapters/Cache/InMemoryCacheAdapter'
 import TestUtils            from './TestUtils';
-import { useExternal }      from './deprecated'
+import { useExternal }      from './deprecated';
+import { getLogger }        from './logger';
 
 // Factory function
 let _ParseServer = function(options) {
@@ -16,5 +16,9 @@ _ParseServer.createLiveQueryServer = ParseServer.createLiveQueryServer;
 
 let GCSAdapter = useExternal('GCSAdapter', 'parse-server-gcs-adapter');
 
+Object.defineProperty(module.exports, 'logger', {
+  get: getLogger
+});
+
 export default ParseServer;
-export { S3Adapter, GCSAdapter, FileSystemAdapter, InMemoryCacheAdapter, TestUtils, logger, _ParseServer as ParseServer };
+export { S3Adapter, GCSAdapter, FileSystemAdapter, InMemoryCacheAdapter, TestUtils, _ParseServer as ParseServer };