[Terraform]: Add provider version to useragent.

[rileykarson]

hashicorp/terraform-provider-google#2438

hashicorp/terraform-provider-azurerm#2032

---

[all]

[terraform]

Add provider version to useragent.

[terraform-beta]

[ansible]

[inspec]

[modular-magician]

I am a robot that works on MagicModules PRs!

I built this PR into one or more PRs on other repositories, and when those are closed, this PR will also be merged and closed.
depends: hashicorp/terraform-provider-google-beta#117
depends: hashicorp/terraform-provider-google#2442

[nat-henderson]

This is going to be a hassle for us on tracking - is it possible to make the new output strings more like the current ones, so the current regexes we use to extract tool & version still work?

e.g. Terraform/1.19.0-beta (+terraform.io)?

[rileykarson]

Discussed offline - this should work with our existing regexes.

I flipped around the arguments so that we are shaped like this:

Terraform/0.11.7 (+https://www.terraform.io) terraform-provider-google-beta/dev

instead of:

Terraform/0.11.7 terraform-provider-google-beta/dev (+https://www.terraform.io)

This is closer to the format used by browsers such as Chrome where each product has one of these shapes, and products are in a list:

{{PRODUCT}}/{{VERSION}}
{{PRODUCT}}/{{VERSION}} ({{COMMENT}})

[modular-magician]

I am (still) a robot that works on MagicModules PRs!

I just wanted to let you know that your changes (as of commit 8cc4d8f) have been included in your existing downstream PRs.