* Allow authentication of resource generator script via service principal
* Re-use the given service principal in case of parametric authentication
* Updated variable names
* Renamed parameter and variable from AzureTenant to AzureTenantId
* Added Azure DevOps pipeline to build an agent
* Added link to azure pipeline to instructions
* Fixed typo in link
* Removed unnecessary / double brackets
* Untangled credential instantiation to make it more readable
* Removed example yaml file
* Removed unnecessary variable assignment
Use the same file naming scheme for Windows as is used for Ubuntu, where
the file name includes the Operating System name and release, but
not the target platform.
This also encourages downstream consumers to re-use the same files with
alternative targets by extending the `builders` section and using the
`-only` command line option with Packer to specify the build target.
Closes#1636
* Show latest commit for custom repos
* Remove unused variables from templates
* Add Get-LatestCommit function
* Fix in synopsis
* Remove SSH_Password variables from Windows Images
* Rename download-customrepo
* Fix in synopsis
