fix(90multipath): use RemainAfterExit=yes for multipathd-configure.service

Services of type `oneshot` should almost always use
`RemainAfterExit=yes`. This is a one-time action that we don't want to
rerun if the unit gets pulled in multiple times in the systemd
transaction.

Author: jlebon

modules.d/90multipath/multipathd-configure.service

@@ -12,6 +12,7 @@ ConditionPathExists=!/etc/multipath.conf
 
 [Service]
 Type=oneshot
+RemainAfterExit=yes
 # mpathconf requires /etc/multipath to already exist
 ExecStartPre=-/usr/bin/mkdir -p /etc/multipath
 ExecStart=/usr/sbin/mpathconf --enable