tasks: run `systemctl daemon-reload` after httpd.service.d updates
Run `systemctl daemon-reload` after
`/etc/systemd/system/httpd.service.d/ipa.conf` is created or deleted,
otherwise systemd will not merge the file into httpd.service and therefore
required environment variables will not be set for httpd.
This fixes authentication failures ("No valid Negotiate header in server
response") due to missing `GSS_USE_PROXY=yes` in httpd environment.
Reviewed-By: Martin Babinsky <firstname.lastname@example.org>