sys-fs/lvm2: Add a patch dropping unsupported udev rule

The `OPTIONS+="event_timeout=180"` rule is not supported by systemd,
and with recent update, systemd complains quite visibly in journalctl
about it. This is already fixed in lvm2 upstream, so this patch will
not be necessary when we do the update.

sdk_container/src/third_party/coreos-overlay/sys-fs/lvm2/files/lvm2-2.02.145-rules.patch

@@ -0,0 +1,12 @@
+diff -ur LVM2.2.02.145/udev/11-dm-lvm.rules.in LVM2.2.02.145.new/udev/11-dm-lvm.rules.in
+--- LVM2.2.02.145/udev/11-dm-lvm.rules.in	2016-03-04 19:03:30.000000000 +0100
++++ LVM2.2.02.145.new/udev/11-dm-lvm.rules.in	2020-08-25 12:01:32.235684488 +0200
+@@ -37,8 +37,6 @@
+ 
+ ENV{DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG}=="1", GOTO="lvm_end"
+ 
+-OPTIONS+="event_timeout=180"
+-
+ # Do not create symlinks for inappropriate subdevices.
+ ENV{DM_LV_NAME}=="pvmove?*|?*_vorigin", GOTO="lvm_disable"
+ ENV{DM_LV_LAYER}=="?*", GOTO="lvm_disable"

sdk_container/src/third_party/coreos-overlay/sys-fs/lvm2/lvm2-2.02.145-r5.ebuild

@@ -71,6 +71,7 @@ PATCHES=(
 
 	# Flatcar:
 	"${FILESDIR}"/${PN}-2.02.145-oneshot.patch # https://github.com/lvmteam/lvm2/pull/37
+	"${FILESDIR}"/${PN}-2.02.145-rules.patch # https://sourceware.org/git/?p=lvm2.git;a=commit;h=125f27ac37bc9b93cc96f64052b9681b3d479ee1
 )
 
 pkg_setup() {