Ignore domains with no dots for letsencrypt domains (refs #21701).

2.Common_services/7.LetsEncrypt/0_setup.py

@@ -42,7 +42,7 @@ def setup(interactive=True):
             continue
         for domain in matching.groups()[0].strip().split(' '):
             domain = domain.strip()
-            if domain and domain != 'localhost' and domain not in domains:
+            if domain and domain != 'localhost' and '.' in domain and domain not in domains:
                 domains.append(domain)
     # Get certificates
     cmds = [