lxc-auto: remount /proc and /sys with relatime

Otherwise containers fail to start, if set to noatime.

utils/lxc/files/lxc-auto.init

@@ -64,6 +64,11 @@ stop() {
 
 #Export systemd cgroups
 boot() {
+	# change noatime to relative for proc and aysfs
+	# otherise lxc (unprivileged at least) fails to start
+	mount -t proc -o remount,rw,nosuid,nodev,noexec,relatime proc /proc
+	mount -t sysfs -o remount,rw,nosuid,nodev,noexec,relatime sysfs /sys
+
 	if [ ! -d /sys/fs/cgroup/systemd ]; then
 		mkdir -p /sys/fs/cgroup/systemd
 		mount -t cgroup -o rw,nosuid,nodev,noexec,relatime,none,name=systemd cgroup /sys/fs/cgroup/systemd