Add maxLogFiles option (#6296)

https://community.parseplatform.org/t/server-log-retention/867/2

Maximum number of logs to keep. If not set, no logs will be removed. This can be a number of files or number of days. If using days, add 'd' as the suffix. (default: null).

I'll run this in production for a few days. I assume it works.

Useful for saving disk space.

Update winston-daily-rotate-file package to 4.4.0

src/Adapters/Logger/WinstonLogger.js

@@ -79,6 +79,7 @@ export function configureLogger({
   logLevel = winston.level,
   verbose = defaults.verbose,
   silent = defaults.silent,
+  maxLogFiles,
 } = {}) {
   if (verbose) {
     logLevel = 'verbose';
@@ -100,6 +101,7 @@ export function configureLogger({
   options.dirname = logsFolder;
   options.level = logLevel;
   options.silent = silent;
+  options.maxFiles = maxLogFiles;
 
   if (jsonLogs) {
     options.json = true;