Handle string returned by 'default' correctly.

We need to handle the string returned by 'default' in the same way we handle
the string returned by 'status' since the resulting flags are compared later.

system/service.py

@@ -996,7 +996,14 @@ class OpenBsdService(Service):
         if stderr:
             self.module.fail_json(msg=stderr)
 
-        default_flags = stdout.rstrip()
+        default_string = stdout.rstrip()
+
+        # Depending on the service the string returned from 'default' may be
+        # either a set of flags or the boolean YES/NO
+        if default_string == "YES" or default_string == "NO":
+            default_flags = ''
+        else:
+            default_flags = default_string
 
         rc, stdout, stderr = self.execute_command("%s %s %s" % (self.enable_cmd, 'status', self.name))