Resolved rc!=0 problem by replacing fgrep with awk. Added ipv4 filter…

…ing to get only v4 peers in case of show ip bgp neighbors (#2743)

Co-authored-by: saurabh17g <[email protected]>

scripts/generate_dump

@@ -459,13 +459,12 @@ save_bgp_neighbor() {
     local timeout_cmd="timeout --foreground ${TIMEOUT_MIN}m"
     local asic_id=${1:-""}
     local ns=$(get_vtysh_namespace $asic_id)
-
-    neighbor_list_v4=$(${timeout_cmd} vtysh $ns -c "show ip bgp neighbors" | grep "BGP neighbor is" | awk -F '[, ]' '{print $4}')
+    neighbor_list_v4=$(${timeout_cmd} vtysh $ns -c "show ip bgp neighbors" | grep "BGP neighbor is" | awk -F '[, ]' '{print $4}' | awk /\\./)
     for word in $neighbor_list_v4; do
         save_cmd "vtysh $ns -c \"show ip bgp neighbors $word advertised-routes\"" "ip.bgp.neighbor.$word.adv$asic_id"
         save_cmd "vtysh $ns -c \"show ip bgp neighbors $word routes\"" "ip.bgp.neighbor.$word.rcv$asic_id"
     done
-    neighbor_list_v6=$(vtysh $ns -c "show bgp ipv6 neighbors" | grep "BGP neighbor is" | awk -F '[, ]' '{print $4}' | fgrep ':')
+    neighbor_list_v6=$(vtysh $ns -c "show bgp ipv6 neighbors" | grep "BGP neighbor is" | awk -F '[, ]' '{print $4}' | awk /:/)
     for word in $neighbor_list_v6; do
         save_cmd "vtysh $ns -c \"show bgp ipv6 neighbors $word advertised-routes\"" "ipv6.bgp.neighbor.$word.adv$asic_id"
         save_cmd "vtysh $ns -c \"show bgp ipv6 neighbors $word routes\"" "ipv6.bgp.neighbor.$word.rcv$asic_id"