Inc timeout to support bbsim multi-olt jobs

Change-Id: I6b5ceb1082f6114aee7d2bee91206d05d407aad0
diff --git a/jjb/pipeline/voltha-nightly-tests-bbsim.groovy b/jjb/pipeline/voltha-nightly-tests-bbsim.groovy
index b2727af..9cd5f16 100644
--- a/jjb/pipeline/voltha-nightly-tests-bbsim.groovy
+++ b/jjb/pipeline/voltha-nightly-tests-bbsim.groovy
@@ -23,7 +23,7 @@
     label "${params.buildNode}"
   }
   options {
-      timeout(time: 190, unit: 'MINUTES')
+      timeout(time: 240, unit: 'MINUTES')
   }
   environment {
     KUBECONFIG="$HOME/.kube/kind-config-voltha-minimal"