add azurerm backend to remote-state

[SlavaDevOps]

what

• Allow to use azurerm backend to read a state from

why

• Currently only s3 and remote backend supported

references

• example backend configuration for azurerm

[aknysh]

thanks @SlavaNL

[aknysh]

/test all

[aknysh]

@SlavaNL can you please pin the provider here https://github.com/cloudposse/terraform-yaml-stack-config/blob/main/examples/spacelift/versions.tf#L15

utils = {
      source  = "cloudposse/utils"
      version = "1.5.0"
    }

make it version = "1.5.0".

There are some changes to Spacelift submode and we need to update the tests, but not in this PR.

[aknysh]

please see the comment and update the provider (the latest version was changed so we need to update the Go tests)

[SlavaDevOps]

@aknysh sure, done in 8aed708

[aknysh]

/test all