dmsquash-live: force load squashfs kernel module

https://bugzilla.redhat.com/show_bug.cgi?id=922248

modules.d/90dmsquash-live/dmsquash-live-root.sh

@@ -49,9 +49,12 @@ ln -s $livedev /run/initramfs/livedev
 
 # determine filesystem type for a filesystem image
 det_img_fs() {
+    udevadm settle
     blkid -s TYPE -u noraid -o value "$1"
 }
 
+modprobe squashfs
+
 for arg in $CMDLINE; do case $arg in ro|rw) liverw=$arg ;; esac; done
 # mount the backing of the live image first
 mkdir -m 0755 -p /run/initramfs/live