Ignore initial ping failure when BESS is not ready to handle it

Change-Id: I2ead30c1e5ed43c51a15e20eaeaa4e5df6022493
diff --git a/omec/omec-user-plane/templates/statefulset-upf.yaml b/omec/omec-user-plane/templates/statefulset-upf.yaml
index 20d05d6..3b5b7e8 100644
--- a/omec/omec-user-plane/templates/statefulset-upf.yaml
+++ b/omec/omec-user-plane/templates/statefulset-upf.yaml
@@ -62,8 +62,8 @@
         - ip route replace {{ .Values.config.upf.enb.subnet }} via {{ .Values.config.upf.access.gateway }};
           ip route replace default via {{ .Values.config.upf.core.gateway }} metric 110;
           iptables -I OUTPUT -p icmp --icmp-type port-unreachable -j DROP;
-          ping {{ .Values.config.upf.access.gateway }} -c 5;
-          ping {{ .Values.config.upf.core.gateway }} -c 5;
+          ping {{ .Values.config.upf.access.gateway }} -c 5 || true;
+          ping {{ .Values.config.upf.core.gateway }} -c 5 || true;
         securityContext:
           capabilities:
             add: