base: install switch_root to /sbin and call it with the full path

modules.d/99base/init

@@ -332,7 +332,7 @@ wait_for_loginit
 umask $OLD_UMASK
 export PATH="$OLD_PATH"
 
-exec switch_root "$NEWROOT" "$INIT" $initargs || {
+exec /sbin/switch_root "$NEWROOT" "$INIT" $initargs || {
     echo "Something went very badly wrong in the initramfs.  Please "
     echo "file a bug against dracut."
     emergency_shell

modules.d/99base/install

@@ -17,7 +17,8 @@ mkdir -p ${initdir}/initqueue-settled
 mkdir -p ${initdir}/tmp
 # Bail out if switch_root does not exist
 if type -P switch_root >/dev/null; then
-    dracut_install switch_root 
+    inst $(type -P switch_root) /sbin/switch_root \
+        || derror "Failed to install switch_root"
 else
     inst "$moddir/switch_root" "/sbin/switch_root" \
         || derror "Failed to install switch_root"