feat(multipath): install tmpfiles.d config file

Recent multipath-tools (0.9.2) added a tmpfiles.d template. Install it
if present.

Author: mwilck

modules.d/90multipath/module-setup.sh

@@ -106,7 +106,8 @@ install() {
         /etc/xdrdevices.conf \
         /etc/multipath.conf \
         /etc/multipath/* \
-        "$config_dir"/*
+        "$config_dir"/* \
+        "$tmpfilesdir/multipath.conf"
 
     mpathconf_installed \
         && [[ $hostonly ]] && [[ $hostonly_mode == "strict" ]] && {