include URL-path (aka usergroup) in OpenConnect invokation, because some...

include URL-path (aka usergroup) in OpenConnect invokation, because some protocols require it for correct behavior in the connection phase

Fixes #18, replaces !14. See discussion at
GNOME/NetworkManager-openconnect!14 (comment 1016563)

Signed-off-by: Daniel Lenski <dlenski@gmail.com>
Status Job ID Name Coverage
  Build
passed fedora28_dist #1182191

00:03:38

 
  Test
passed fedora_from_dist #1182192

00:02:53