More polkit-parsing.sh cleanup

• polkit-parsing.sh:

  • Adjust system bus socket to /run/dbus/system_bus_socket

    • In Debian system bus socket moved from /var/run/dbus/system_bus_socket to /run/dbus/system_bus_socket, a symlink exists from /var/run/... to /run/... but let's use the real path.

  • Give more time to polkitd to be ready

    • For unknown reasons (race conditions?), pkaction randomly fails with: "Error enumerating actions: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying" So, to mitigate this issue give it some more time to be ready, although this should be the aim of "gdbus wait"

  • Improve cleanup() to catch unexpected failures and to ignore expected one since polkitd should already be killed in the script body.

  • Drop 'set -x' in cleanup() to reduce noise in the log