Comment # 6 on bug 1042037 from Dario Savella

Since you asked, here's the second part of the script:

if ! a2enmod -q authn_core; then
  a2enmod authn_core
fi

if ! a2enmod -q authz_core; then
  a2enmod authz_core
fi

if ! a2enmod -q log_config; then
  a2enmod log_config
fi

If I disable the log_config module from my configuration, every upgrade will
enable it again.

Anyway: I will see if I can close this bug, otherwise you will have to do it.

Thanks for the support