VOL-2567 Compress container logs

Change-Id: Ide7eeb97df345b683565419e9b13d8b154d89037
diff --git a/jjb/pipeline/voltha-go-multi-tests.groovy b/jjb/pipeline/voltha-go-multi-tests.groovy
index a167a29..c8886ff 100644
--- a/jjb/pipeline/voltha-go-multi-tests.groovy
+++ b/jjb/pipeline/voltha-go-multi-tests.groovy
@@ -130,6 +130,8 @@
          extract_errors_python adapter-open-onu >> $WORKSPACE/error-report.log
          extract_errors_python voltha-ofagent >> $WORKSPACE/error-report.log
 
+         gzip $WORKSPACE/onos-voltha-combined.log
+
          ## shut down voltha
          cd $WORKSPACE/kind-voltha/
          WAIT_ON_DOWN=y ./voltha down
@@ -143,7 +145,7 @@
             passThreshold: 100,
             reportFileName: 'RobotLogs/report*.html',
             unstableThreshold: 0]);
-         archiveArtifacts artifacts: '*.log'
+         archiveArtifacts artifacts: '*.log,*.gz'
 
     }
   }