Add Azure to beta command

[mrsimonemms]

Description

Adds Azure support as a beta command.

Related Issue(s)

Fixes #

How to test

This assumes you're running the console, API and CLI in local debug mode.

1. Create personal keys for our Terraform service principal for ARM_CLIENT_SECRET.
2. Get the tenant ID for ARM_TENANT_ID.
3. Get the Subscription ID for ARM_SUBSCRIPTION_ID.
4. Get the Application (client) ID for ARM_CLIENT_ID.
5. Set ARM_CLIENT_ID, ARM_CLIENT_SECRET, ARM_TENANT_ID and ARM_SUBSCRIPTION_ID envvars
6. Run your desired command in the CLI

Example CLI commands:

Azure DNS

You will need to create a DNS Zone with your desired domain registered. I have the domains registered elsewhere and setup a subdomain in Azure (eg, azure.domain.com) and then setup an NS record on my domain registrar.

Azure puts everything in resource groups, which is a logical grouping of multiple resources. You will need to provide the name of that in --dns-azure-resource-group.

go mod tidy
go run . beta azure create \
  --alerts-email <your-email> \
  --github-org <github-org> \
  --domain-name <domain-name> \
  --gitops-template-branch sje/azure \
  --dns-azure-resource-group <dns-zone-resource-group>

Cloudflare

go mod tidy
go run . beta azure create \
  --alerts-email <your-email> \
  --github-org <github-org> \
  --domain-name <domain> \
  --gitops-template-branch sje/azure \
  --cluster-name <cluster-name> \
  --dns-provider cloudflare \
  --cloud-region <region> \
  --subdomain <cloudflare-subdomain>

[mrsimonemms]

This can be reviewed but will be in a failing state until the Kubefirst API changes are incorporated - I could do this now, but would rather wait until it's published to main

[fharper]

I tested it once and it's working fine for me. Keep in min that this implementation doesn't have workload clusters yet and it's specific to GitHub.