Don't stop the build if a port-forward is missing

Change-Id: Ic650479a344a44162bd3266569ef1fd4bf7c13b2
(cherry picked from commit bc27e9c21c486097cc54205bb4e0b0458019554b)
diff --git a/Jenkinsfile-voltha-build b/Jenkinsfile-voltha-build
index 4dbae1a..8978923 100644
--- a/Jenkinsfile-voltha-build
+++ b/Jenkinsfile-voltha-build
@@ -96,15 +96,15 @@
                         #Remove all while true; do kubectl port-forward ...done; rules
                         for port_fwd_id in `ps -ax | grep "port-forward" | grep -E "onos|voltha" | grep "while true"| awk '{print \$1}'`;
                         do
-                            cat /proc/\$port_fwd_id/cmdline
-                            kill -9 \$port_fwd_id
+                            cat /proc/\$port_fwd_id/cmdline 2>/dev/null
+                            kill -9 \$port_fwd_id || true
                         done
 
                         #Remove all kubectl port-forward rules
                         for port_fwd_id in `ps -ax | grep "port-forward" | grep -E "onos|voltha" | awk '{print \$1}'`;
                         do
-                            cat /proc/\$port_fwd_id/cmdline
-                            kill -9 \$port_fwd_id
+                            cat /proc/\$port_fwd_id/cmdline 2>/dev/null
+                            kill -9 \$port_fwd_id || true
                         done
                         """
                     }
@@ -138,7 +138,7 @@
                     export DEPLOY_K8S=no
                     export INSTALL_KUBECTL=no
                     export INSTALL_HELM=no
-                    export WITH_RADIUS=yes 
+                    export WITH_RADIUS=yes
                     export FANCY=0
                     # VOL-3162 Forwaring port 2379 does not work on ONF demo pod
                     export VOLTHA_ETCD_PORT=${VolthaEtcdPort}