[ASTERIXDB-2049][ING] Improve logging for Active messages

- user model changes: no
- storage format changes: no
- interface changes: no

details:
- With each active message, log the runtime which sent it.

Change-Id: I9663277cadf922b7e0ec224b056357b0f24bbb05
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1951
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Murtadha Hubail <mhubail@apache.org>
diff --git a/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/message/ActivePartitionMessage.java b/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/message/ActivePartitionMessage.java
index 6041ab5..39b905f 100644
--- a/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/message/ActivePartitionMessage.java
+++ b/asterixdb/asterix-active/src/main/java/org/apache/asterix/active/message/ActivePartitionMessage.java
@@ -72,7 +72,7 @@
 
     @Override
     public String toString() {
-        return ActivePartitionMessage.class.getSimpleName() + '-' + event;
+        return activeRuntimeId + ":" + ActivePartitionMessage.class.getSimpleName() + '-' + event;
     }
 
     @Override