* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same.
* removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context.
* on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors.
* added unit tests for step_download that are now CI tested on windows, mac & linux.
* files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension`
* since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted.
* a download file is protected and locked by a file lock,
* updated docs
* updated go modules and vendors
This commit adds a new option, `vmx_remove_ethernet_interfaces`, to both
of the VMWare builders. This is useful when building Vagrant boxes,
since Vagrant now produces output such as:
```
WARNING: The VMX file for this box contains a setting that is
automatically overwritten by Vagrant when started. Vagrant will stop
overwriting this setting in an upcoming release which may pre vent
proper networking setup. Below is the detected VMX setting:
ethernet0.pcislotnumber = "33"
If networking fails to properly configure, it may require this VMX
setting. It can be manually applied via the Vagrantfile:
Vagrant.configure(2) do |config|
config.vm.provider :vmware_fusion do |vmware|
vmware.vmx["ethernet0.pcislotnumber"] = "33"
end
end
```
This can be avoided entirely by removing the ethernet adapters from the
VMX file prior to packaging as a Vagrant box, in which case adapters are
created as expected according to the Vagrantfile specification.