Make default false as true cause to show shutdown instead of reboot

message (bnc#988379)

That means if chreipl succeed, system will reboot and boot correct
device.

src/clients/reipl_bootloader_finish.rb

@@ -22,7 +22,7 @@ def main
 
       textdomain "reipl"
 
-      @different = true
+      @different = false
       @ipl_msg = ""
 
       # Other architectures do not support it