Use existing config files when reinstalling Salt
Use existing config files when reinstalling Salt

The install_salt script may be called again to reinstall or update Salt.
Because we are Salting our configuration files, force apt-get to use any
existing configuration files and ignore updates in the Salt packages.

servo/saltfs,ALikhachev/saltfs,UK992/saltfs,ALikhachev/saltfs,servo/saltfs,UK992/saltfs,rwaweber/saltfs,rwaweber/saltfs,ALikhachev/saltfs,UK992/saltfs,rwaweber/saltfs