Git revision is specified in the git module to Salt not fail trying to
verify it is in HEAD when it is in a tag from a previous installation.
Fixes: https://github.com/ben-grande/qusal/issues/27
- Passwordless as it doesn't compromise security;
- Firewall blocks access to the interface in case the pihole is exposed
to the internet;
- setupVars.conf needs to be 644 for non root commands to the pihole
script to work, so the WEB_PASSWORD can be read as normal user,
restricting root on pihole does not make sense, as it can modify the
network setting via pihole web interface.
