Pull up following revision(s) (requested by roy in ticket #1631):

etc/powerd/scripts/sleep_button: revision 1.11

Remove the stopping and starting of various network scripts on
sleep / resume.

This should no longer be needed now the various applications
(dhcpcd, ntpd, wpa_supplicant et all) are more aware to the network state
as all interface carriers should be brought down and up again.

Fixes PR misc/52397.

(martin)