auto-t: fix testNetconfig lease parsing

The parsing code was breaking out of the loop on the first comment
which is incorrect and causes only part of the file to be parsed.
Its odd this hasn't popped up until now but its likely due to
differing dhcpd versions, some which add comments and others that
do not.

autotests/testNetconfig/connection_test.py

@@ -276,7 +276,7 @@ class Test(unittest.TestCase):
                 elif quote or ch not in ' \t\r\n;{}#':
                     token += ch
                 if ch == '#':
-                    break
+                    continue
                 elif ch == '{':
                     stack.append([])
                 elif ch == '}':