Fix MS2715, false positive when telneting against web server

Add a condition to identify when server returned HTML as login failure

Author: jinq102030

lib/msf/core/auxiliary/login.rb

@@ -44,6 +44,7 @@ def create_login_ivars
         Unable    | Error    | Denied    | Reject   |
         Refuse    | Close    | Closing   | %\ Bad   |
         Sorry     |
+        \<\/body\>\<\/html\> |
         Not\ on\ system\ console |
         Enter\ username\ and\ password |
         Auto\ Apply\ On |