Remove jen20 from CODEOWNERS

gomod: update go-cloudstack

builder/docker: better windows defaults

adds support for accepting the chef license

stop using goroutines in TestPausedProvisionerProvision_waits

Do 7648

refactoring step_run_spot_instance and swapping out the calls to create a spot instance with a call to create a spot fleet of one, so that we can be more flexible with the instance type when desired

to render the test less flaky.

this should fix #7684

Fix typo and update ubuntu image version

The old url is no longer available, user `cpu should be `cpus

* make possible execution policy values lowercase
* prefix execution policies possibilities

this has the effect to not wrap the command, which will allow to know the exit status of a command in docker

improve contributing.md for windows user

improving description for windows user

Update virtualbox-iso.html.md.erb

remove cpus/memory flags due to their property implementation, add vram for example

 Check error returned from retry.Config.Run() in powershell provisioner

refresh line endings

update volume_type docs 

update volume_type docs and move ami_block_device_mappings into partials so that we don't have to keep it updated in four places. Two partials so that we can properly alphabetize the kms_key_id property only available in chroot

fix layout

document alias keys usage