Feature Request: Providing parameter json file to deployment

[GlatBane]

Description

I would like to be able to specify a parameters.json file (or equivalent) to be used with ARM templates. As it is right now the only parameter that is required for the template is the vmName controlled by the plugin.

Use case

I would like to be able to specify a parameter of type SecureString in the ARM template and then using the parameters.json to specify that the value needs to be taken from an Azure Key vault as documented here: https://docs.microsoft.com/en-us/azure/azure-resource-manager/templates/key-vault-parameter?tabs=azure-cli#reference-secrets-with-static-id

Suggested solutions 1

Have a single field where a json object can be specified, this object gets the vmName injected/overridden before deployment as to still be controlled by the plugin

Suggested solution 2

Have the ability to specify N number of parameters and for each parameter specify the json sub part

Added bonus points

• For doing parameter name check between the ARM template and the parameter file
• For supporting parameter replacements (but that seems to be a completely different change to even get access to those values from this context)