Allow DABs to dynamically pass in host target

[Gijsreyn]

Describe the issue

As a user, I want to be able to pass in the host dynamically on the specific target. This allows me to combine both IaC (Bicep) output when deploying Azure Databricks with DABs in one DevOps pipeline.

Configuration

bundle:
  name: test
include:
  - resources/*.yml

variables:
  hostName:
    description: The hostname of the Databricks workspace
    type: string


targets:
  dev:
    mode: development
    default: true
    workspace:
      host: ${var.hostName}

Steps to reproduce the behavior

1. Run databricks configure
2. Run databricks bundle validate -t 'dev' --var=hostName=<outputFromAzureDeployment>

The hostname cannot be replaced.

OS and CLI version

Databricks CLI v0.233.0

Is this a regression?

No.