Use --offroot flag when assembling md arrays.

This ensures that mdmon won't be killed by systemd.
---
 udev-md-raid.rules |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- mdadm-3.2.5.orig/udev-md-raid.rules
+++ mdadm-3.2.5/udev-md-raid.rules
@@ -10,7 +10,7 @@ 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", RUN+="/sbin/mdadm --incremental $tempnode"
+ACTION=="add", RUN+="/sbin/mdadm --incremental $tempnode --offroot"
 ACTION=="remove", ENV{ID_PATH}=="?*", RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
 ACTION=="remove", ENV{ID_PATH}!="?*", RUN+="/sbin/mdadm -If $name"