NO-JIRA: Update gather_metallb (#379)

* Update gather_metallb

Add a timeout in "oc exec -c frr -- vtysh -c ${COMMAND}"
This command can block if vtysh is not responding properly and can put customer into a situation where mustgather can not be grabbed.

* Update gather_metallb

collection-scripts/gather_metallb

@@ -25,7 +25,7 @@ function gather_frr_logs() {
 
     for COMMAND in "${COMMANDS[@]}"; do
         echo "###### ${COMMAND}" >> ${LOGS_DIR}/dump_frr
-        echo "$( oc -n ${operator_ns} exec ${1} -c frr -- vtysh -c "${COMMAND}")" >> ${LOGS_DIR}/dump_frr
+        echo "$( timeout -v 20s oc -n ${operator_ns} exec ${1} -c frr -- vtysh -c "${COMMAND}")" >> ${LOGS_DIR}/dump_frr
     done
 }