Reduce size of jenkins logs

Each build is now over 40mb logs.

A lot of DEBUG logging was left on for test failures that have been
fixed. Added an issue # for ones that are still valid or if if it on
as the test verifies debug

akka-cluster/src/multi-jvm/scala/akka/cluster/MultiDcLastNodeSpec.scala

@@ -15,7 +15,7 @@ object MultiDcLastNodeSpec extends MultiNodeConfig {
 
   commonConfig(ConfigFactory.parseString(
     s"""
-      #akka.loglevel = DEBUG
+      akka.loglevel = INFO
     """).withFallback(MultiNodeClusterSpec.clusterConfig))
 
   nodeConfig(first, second)(ConfigFactory.parseString(