[VOL-3813] Enable soak jobs and increase timer for DT nightly jobs

Change-Id: Iceff14160b99bf3fa6cbcbbab2be29f809b5876e
diff --git a/jjb/pipeline/voltha-dt-physical-functional-tests.groovy b/jjb/pipeline/voltha-dt-physical-functional-tests.groovy
index a3f7083..c234f41 100644
--- a/jjb/pipeline/voltha-dt-physical-functional-tests.groovy
+++ b/jjb/pipeline/voltha-dt-physical-functional-tests.groovy
@@ -23,7 +23,7 @@
     label "${params.buildNode}"
   }
   options {
-    timeout(time: 340, unit: 'MINUTES')
+    timeout(time: 440, unit: 'MINUTES')
   }
 
   environment {