[builder/openstack] adds option to discover provisioning network

Document how code generation works a little in .github/CONTRIBUTING.md

Bump proxmox dependency

builder/oneandone: fix dropped errors

post-processor/compress: fix dropped errors

[WIP] Add instance_display_name for cloudstack builder

Fix performance regression

need to initialize variables scoped to the individual loop, because the address of k,v stay the same and that means we overwrite previous variables when assigning them to the struct directly.

This reverts commit 8b1fcbb3.

This change introduce instance_display_name optional parameter
for Cloudstack builder to set custom VM display name.
By default it is set to "Created by Packer".

Make Vagrant driver code pass through logs as it receives them rather…

[amazon/chroot] Move common/generic chroot builder steps to common directory

Make Vagrant driver code pass through logs as it receives them rather than buffering and returning them all at the end of the call.

Add the additional_disk_size option tho the hyperv vmcx builder. 

when using a slice of an imported field type, the Underlying still re…

fix transcription error from when we moved to generated docs

common: collect dropped error

when using a slice of an imported field type, the Underlying still returned the slice rather than the element type.

improve error message

fix: set openstack metadata for use_blockstorage_volume

[azure] Set correct user agent for Azure client set