MAN: add dots as valid character in domain names
Add dots into a set of allowed characters for domain names.
Resolves:
https://fedorahosted.org/sssd/ticket/2527
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
(cherry picked from commit 9a15eb105d01d9e100e69e9d66fb8e880b228246)