Fix cert method name

usr/lib/python3.6/vmmgr/crypto.py

@@ -50,7 +50,7 @@ def get_cert_info():
             'expires': '{} UTC'.format(cert.not_valid_after),
             'method': 'manual'}
     if os.access(ACME_CRON, os.X_OK):
-        data['method'] = 'letsencrypt'
+        data['method'] = 'automatic'
     # Naive method of inferring if the cert is selfsigned
     # Good enough as reputable CAs will never have the same subject and issuer CN
     # and the 'method' field is used just to populate a GUI element and not for any real cryptography