udev: adapt rules to systemd v247

New events have been added in kernel 4.14 ("bind" and "unbind").
Systemd maintainer suggests to modify "add|change" branches.
This patches implements their suggestions. There is no issue yet because
new event types are not used in md.

Please see systemd announcement for details[1].

[1] https://lists.freedesktop.org/archives/systemd-devel/2020-November/045646.html

Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>

udev-md-raid-arrays.rules

@@ -3,7 +3,7 @@
 SUBSYSTEM!="block", GOTO="md_end"
 
 # handle md arrays
-ACTION!="add|change", GOTO="md_end"
+ACTION=="remove", GOTO="md_end"
 KERNEL!="md*", GOTO="md_end"
 
 # partitions have no md/{array_state,metadata_version}, but should not

udev-md-raid-assembly.rules

@@ -30,8 +30,9 @@ LABEL="md_inc"
 
 # remember you can limit what gets auto/incrementally assembled by
 # mdadm.conf(5)'s 'AUTO' and selectively whitelist using 'ARRAY'
-ACTION=="add|change", IMPORT{program}="BINDIR/mdadm --incremental --export $devnode --offroot $env{DEVLINKS}"
-ACTION=="add|change", ENV{MD_STARTED}=="*unsafe*", ENV{MD_FOREIGN}=="no", ENV{SYSTEMD_WANTS}+="mdadm-last-resort@$env{MD_DEVICE}.timer"
+ACTION!="remove", IMPORT{program}="BINDIR/mdadm --incremental --export $devnode --offroot $env{DEVLINKS}"
+ACTION!="remove", ENV{MD_STARTED}=="*unsafe*", ENV{MD_FOREIGN}=="no", ENV{SYSTEMD_WANTS}+="mdadm-last-resort@$env{MD_DEVICE}.timer"
+
 ACTION=="remove", ENV{ID_PATH}=="?*", RUN+="BINDIR/mdadm -If $name --path $env{ID_PATH}"
 ACTION=="remove", ENV{ID_PATH}!="?*", RUN+="BINDIR/mdadm -If $name"
 

udev-md-raid-safe-timeouts.rules

@@ -50,7 +50,7 @@ ENV{DEVTYPE}!="partition", GOTO="md_timeouts_end"
 
 IMPORT{program}="/sbin/mdadm --examine --export $devnode"
 
-ACTION=="add|change", \
+ACTION!="remove", \
   ENV{ID_FS_TYPE}=="linux_raid_member", \
   ENV{MD_LEVEL}=="raid[1-9]*", \
   TEST=="/sys/block/$parent/device/timeout", \