nmcli: honor IP options for VPNs (#5228) (#5252)

* nmcli: honor IP options for VPNs

This can be used for split tunneling - I extended a test as an example.

* Add changelog

(cherry picked from commit 946c48d148)

Co-authored-by: Chih-Hsuan Yen <yan12125@gmail.com>

plugins/modules/net_tools/nmcli.py

@@ -1737,6 +1737,7 @@ class Nmcli(object):
             '802-11-wireless',
             'gsm',
             'wireguard',
+            'vpn',
         )
 
     @property