Cancel Build after receiving interrupt

#### Overview of the Issue

So whenever I cancel build while its on process of _waiting for volume_, it seems doesn't delete the volume and now displaying error on openstack. There should be a code that allows deletion of volume upon cancel/termination of build process.

#### Reproduction Steps

1. create simple openstack build
2. press ctrl+c while build process says _waiting for volume XXXXXXXXXX to become available..._
3. Volume stays on openstack

### Plugin and Packer version

packer version: v1.8.1