refactor(squash): move all setup code to init-squash.sh

Seperate of init.sh and setup-squash.sh is pointless, merge them into one.

modules.d/99squash/init-squash.sh

@@ -59,3 +59,8 @@ for file in $SQUASH_MNT/*; do
 
 	echo $mntdir >> $SQUASH_MNT_REC
 done
+
+exec /init.orig
+
+echo "Something went wrong when trying to exec original init!"
+exit 1

modules.d/99squash/init.sh

@@ -1,7 +0,0 @@
-#!/bin/sh
-/squash/setup-squash.sh
-
-exec /init.orig
-
-echo "Something went wrong when trying to start original init executable!"
-exit 1

modules.d/99squash/module-setup.sh

@@ -48,11 +48,10 @@ installpost() {
     # Install required files for the squash image setup script.
     hostonly="" instmods "loop" "squashfs" "overlay"
     inst_multiple modprobe mount mkdir ln echo
-    inst "$moddir"/setup-squash.sh /squash/setup-squash.sh
-    inst "$moddir"/clear-squash.sh /squash/clear-squash.sh
 
     mv "$initdir"/init "$initdir"/init.orig
-    inst "$moddir"/init.sh "$initdir"/init
+    inst "$moddir"/init-squash.sh /init
+    inst "$moddir"/clear-squash.sh /squash/clear-squash.sh
 
     # Keep systemctl outsite if we need switch root
     if [[ ! -f "$initdir/lib/dracut/no-switch-root" ]]; then