Add new bbsim multi olt job for voltha-2.6 branch, adjust job timings for berlin pod

Change-Id: I128054856664c87b44ca39d87d41ab3a7aa622fb
diff --git a/jjb/cord-test/voltha.yaml b/jjb/cord-test/voltha.yaml
index 3eb9881..77e54e6 100644
--- a/jjb/cord-test/voltha.yaml
+++ b/jjb/cord-test/voltha.yaml
@@ -580,7 +580,7 @@
           Jenkinsfile: 'Jenkinsfile-voltha-build'
           configurePod: true
           profile: '1T8GEM'
-          time: '13'
+          time: '21'
 
 
       # Berlin POD test job - master versions: uses tech profile on voltha branch