Handle case where .UNFONFIGURE file isn't there

lib/ansible/modules/extras/system/solaris_zone.py

@@ -161,6 +161,7 @@ class Zone(object):
         self.configure_ssh_keys()
 
     def configure_sysid(self):
+        if os.path.isfile('%s/root/etc/.UNCONFIGURED' % self.path):
             os.unlink('%s/root/etc/.UNCONFIGURED' % self.path)
 
         open('%s/root/noautoshutdown' % self.path, 'w').close()