salt/master: chdir to root not homedir
salt/master: chdir to root not homedir

The pre-flight checks try to change to $HOME, this can fail for multiple
reasons. One such case is that /root is a protected dir under SELinux
which the master should not have access to. The daemon should instead
change to the root dir which is the only dir that is always guaranteed
to be there. The limited testing I have managed to do shows that windows
accepts the '/' path too just fine so the os-specific case is not
required either.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt