New Auto_reboot plug-in II

Also, added code to obmc boot test to process rest_username and
rest_password.

Change-Id: I7b64be7072d4848230e9d47a4da54ac89794af64
diff --git a/bin/plug_ins/Auto_reboot/integrated b/bin/plug_ins/Auto_reboot/integrated
new file mode 100755
index 0000000..050dfc4
--- /dev/null
+++ b/bin/plug_ins/Auto_reboot/integrated
@@ -0,0 +1,2 @@
+# The presence of this file tells our software that this plug-in is
+# integrated.  In other words, the user can't choose to unselect it.