Azure-devops-cli-extension: Management of variable groups

[benc-uk]

Is your feature request related to a problem? Please describe.
Currently creating a variable group is a manual task only available from the Azure DevOps portal. For open source projects where I'm sharing Pipelines YAML and referencing variable groups in them, this is a major pain.

I simply have to instruct users to go set the variable group up manually and call it a specific name, then tell them which variables to set in there. It's very clumsy

Describe the solution you'd like
The CLI should allow for doing this, e.g. via az devops var-group create command and potentially an input YAML file which sets the variable defaults. In addition a az devops var-group variable set command to allow setting of variables in a group. This would allow for automated scripting of setups

Additional context
Add any other context or screenshots about the feature request here.

[atbagga]

Command structure proposed for Variable-Group Commands

|Command |Description |Params |Table Output Response |Comments |
|-----------------------------------|---------------------------------|-----------------------------------------------------------------------------|------------------------------------|-------------------------------------------------------------------------------------------------|
|az pipelines variable-group create|Create a new Variable Group |org, project, name, description, variables, type (vsts, azurekeyvault) |name, id, description, num_variables| |
|az pipelines variable-group update|Update existing variable group |org, project, group-id.. Update name, description, type, variables |name, id, description, num_variables| |
|az pipelines variable-group list |List variable groups in a project|org, project, group-name, action-filter, continuation-token, query-order, top|name, id, description, num_variables|list with ids is another API, so we can have that functionality in the same command if required.|
|az pipelines variable-group show |Show details on a variable group |org, project, group-id |name, id, description, num_variables| |
|az pipelines variable-group delete|Delete a variable group |org, project, group-id | | |

Rest API docs link

Once the variable groups are created they can be linked to a pipeline using create or update pipeline command. Work will be tracked here - #639

ToDo: Work on how commands will create variable groups using Azure Keyvault

[atbagga]

Variable group management commands will be available in 0.12.0 in next couple of weeks.

Filed a new issue to track - AzureKeyVault groups #723

[ravensorb]

It would be great to be able to manage security on variable groups as well.

[atbagga]

@ravensorb avoid commenting on closed issues as they might never get noticed. Feel free to file a new issue and we will prioritise it based on upvotes.