Bug 1917269

BGP configuration option neighbor PEER ttl-security hops NUMBER not displayed in vtysh show running-config output.

Although the configuration is not displayed, it is being set per the BGP daemon log:
2021/01/11 14:56:26 BGP: peer_ttl_security_hops_set: set gtsm_hops to 1 for uplink

Documentation: http://docs.frrouting.org/en/latest/bgp.html#clicmd-[no]neighborPEERttl-securityhopsNUMBER

This issue was reported upstream and fixed in master branch:
- https://github.com/FRRouting/frr/issues/7848
- https://github.com/donaldsharp/frr/commit/8a66632391db5f5181a4afef6aae41f48bee7fdb


Version-Release number of selected component (if applicable):
- OS Version: RHEL 8.3
- Kernel: Linux 4.18.0-240.el8.x86_64
- FRR Version: 7.5


Steps to Reproduce:
1. Set ttl-security hops in frr.conf. Example:

	hostname ctrl-3-0
	log file /var/log/frr/frr.log debugging
	service integrated-vtysh-config
	line vty

	router bgp 64999
	  bgp log-neighbor-changes
	  bgp graceful-shutdown

	  neighbor uplink peer-group
	  neighbor uplink remote-as internal
	  neighbor uplink bfd
	  neighbor uplink ttl-security hops 1
	  neighbor enp2s0 interface peer-group uplink
	  neighbor enp3s0 interface peer-group uplink

	  address-family ipv4 unicast
	    redistribute connected
	    neighbor uplink allowas-in origin
	  exit-address-family

	  address-family ipv6 unicast
	    redistribute connected
	    neighbor uplink activate
	    neighbor uplink allowas-in origin
	  exit-address-family

2. Start FRR with the BGP daemon enabled.
3. Check running configuration in vtysh

Actual results:

	[root@ctrl-3-0 frr]# vtysh -c 'show running-config'
	Building configuration...

	Current configuration:
	!
	frr version 7.5
	frr defaults traditional
	hostname ctrl-3-0
	log file /var/log/frr/frr.log
	no ipv6 forwarding
	!
	router bgp 64999
	 bgp log-neighbor-changes
	 bgp graceful-shutdown
	 neighbor uplink peer-group
	 neighbor uplink remote-as internal
	 neighbor uplink bfd
	 neighbor enp2s0 interface peer-group uplink
	 neighbor enp3s0 interface peer-group uplink
	 !
	 address-family ipv4 unicast
	  redistribute connected
	  neighbor uplink allowas-in origin
	 exit-address-family
	 !
	 address-family ipv6 unicast
	  redistribute connected
	  neighbor uplink activate
	  neighbor uplink allowas-in origin
	 exit-address-family
	!
	line vty
	!
	end


Expected results:
I would have expected to see an output line with neighbor uplink ttl-security hops 1.