[HUDI-1707] Reduces log level for too verbose messages from info to debug level. (#2714)

* Reduces log level for too verbose messages from info to debug level.
* Sort config output.
* Code Review : Small restructuring + rebasing to master
 - Fixing flaky multi delta streamer test
 - Using isDebugEnabled() checks
 - Some changes to shorten log message without moving to DEBUG

Co-authored-by: volodymyr.burenin <volodymyr.burenin@cloudkitchens.com>
Co-authored-by: Vinoth Chandar <vinoth@apache.org>

hudi-timeline-service/src/main/java/org/apache/hudi/timeline/service/RequestHandler.java

@@ -136,8 +136,8 @@ public class RequestHandler {
         if (isLocalViewBehind(ctx)) {
           HoodieTimeline localTimeline = viewManager.getFileSystemView(basePath).getTimeline();
           LOG.info("Syncing view as client passed last known instant " + lastKnownInstantFromClient
-              + " as last known instant but server has the folling timeline :"
-              + localTimeline.getInstants().collect(Collectors.toList()));
+              + " as last known instant but server has the following last instant on timeline :"
+              + localTimeline.lastInstant());
           view.sync();
           return true;
         }
@@ -457,7 +457,7 @@ public class RequestHandler {
         metricsRegistry.add("TOTAL_CHECK_TIME", finalCheckTimeTaken);
         metricsRegistry.add("TOTAL_API_CALLS", 1);
 
-        LOG.info(String.format(
+        LOG.debug(String.format(
                 "TimeTakenMillis[Total=%d, Refresh=%d, handle=%d, Check=%d], "
                     + "Success=%s, Query=%s, Host=%s, synced=%s",
                 timeTakenMillis, refreshCheckTimeTaken, handleTimeTaken, finalCheckTimeTaken, success,