T849: move BGP peer-group node to ipv4 address family

To have a consitent IPv4/IPv6 CLI a lot of BGP neighbor nodes have been
migrated. The IPv4 peer-group has been forgotten, leaving a non consistent CLI.

Previously:
-----------

neighbor 2001:DB8:FFFF::1 {
     address-family {
         ipv6-unicast {
             peer-group iBGP
         }
     }
     peer-group iBGP
}

Now:
----

neighbor 2001:DB8:FFFF::1 {
     address-family {
         ipv6-unicast {
             peer-group iBGP
         }
     }
     address-family {
         ipv4-unicast {
             peer-group iBGP
         }
     }
}

1 files changed, 0 insertions, 0 deletions

diff --git a/cfg-version/quagga@3 b/cfg-version/quagga@4
index e69de29b..e69de29b 100644
--- a/cfg-version/quagga@3
+++ b/cfg-version/quagga@4