Add Azure Blob Storage Support

[mohitarora]

Allow go-getter to download artifacts from Azure Blob Storage private containers.

S3 is already supported, this is a feature request to have same functionality for Azure Blob Storage.

[steve-88]

Hi,
Just so I understand this correctly. If we're using terraform registry and we store our modules in an Azure Storage account...this is not currently supported?

module "web_agw" {
source = "terraform.blah.cloud/tf-shared-modules/applicationgateway/azure"
version = "1.0.0"

Initializing modules...
Downloading terraform.blah.cloud/tf-shared-modules/applicationgateway/azure 1.0.0 for web_agw...

Error: Failed to download module

Could not download module "web_agw" (main.tf:148) source code from
"https://storageaccountblah.blob.core.windows.net/tf-shared-modules/applicationgateway_1.0.0.zip":
bad response code: 404.

[larsmaes]

I added a PR in an attempt to get this feature in.