Place list of loaded modules in /var/run directly

Do not use /var/run/qubes for this, as it may be non-root writeable and
someone may want to isolate root/user.
Also, remove the file after resume.

(cherry picked from commit 79b38cf106)

qubes-rpc/prepare-suspend

@@ -36,11 +36,13 @@ if [ x"$action" = x"suspend" ]; then
             modprobe -r $mod
         fi
     done
-    echo $LOADED_MODULES > /var/run/qubes/suspend-modules-loaded
+    echo "$LOADED_MODULES" > /var/run/qubes-suspend-modules-loaded
 else
-    for mod in `cat /var/run/qubes/suspend-modules-loaded`; do
-        modprobe $mod
+    # shellcheck disable=SC2013
+    for mod in $(cat /var/run/qubes-suspend-modules-loaded); do
+        modprobe "$mod"
     done
+    rm -f /var/run/qubes-suspend-modules-loaded
     if qsvc network-manager ; then
         dbus-send --system --print-reply          \
             --dest=org.freedesktop.NetworkManager \