gpo: Sudoers ext should not crash if policy missing

If a user has manually removed a policy, the
extension should not crash in an unapply removing
it.

Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

python/samba/gp_sudoers_ext.py

@@ -51,6 +51,7 @@ class gp_sudoers_ext(gp_pol_ext):
             self.gp_db.set_guid(guid)
             if str(self) in settings:
                 for attribute, sudoers in settings[str(self)].items():
+                    if os.path.exists(sudoers):
                         os.unlink(sudoers)
                     self.gp_db.delete(str(self), attribute)
             self.gp_db.commit()