**Summary**
Add completion help to VRRP hello-source-address. This allows the selection of a configured IP on the system.
**Use case**
Select configured IP in the system for VRRP `hello-source-address`
At the moment we do not see completion for configure IP addresses
```
vyos@r14# set high-availability vrrp group WAN hello-source-address
Possible completions:
<x.x.x.x> IPv4 hello source address
<h:h:h:h:h:h:h:h> IPv6 hello source address
[edit]
vyos@r14#
```