Remove an OpenStack instance directly from the database

Remove an OpenStack instance directly from the database
Sometimes you just want to get rid of an OpenStack instance, but the nova CLI doesn't really do the job. I found a very useful script here to achieve this task, but I found two issues there.

1- If you have 2 instances with the same name, it doesn't work at all

2- With the kilo release two DELETE statements are missing

So here it is, fixed :)

Usage : script.sh mysql_host mysql_username mysql_password your_vm_impossible_to_delete