Wait out animation in 'no user' 'not GNOME' flow

See https://openqa.fedoraproject.org/tests/473215 - it failed
because we tried to click FINISH CONFIGURATION while it was
still animating downwards.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

tests/_graphical_wait_login.pm

@@ -21,6 +21,8 @@ sub run {
         }
         else {
             anaconda_create_user(timeout=>$wait_time);
+            # wait out animation
+            wait_still_screen 3;
             assert_and_click "initialsetup_finish_configuration";
             set_var("_setup_done", 1);
         }