[ansible] adding more specific metrics

[rambleraptor]

Right now, there's no way to add additional metric metadata to Ansible requests. It would be great to be able to separate Tower usage (or role usage, collections, etc) from regular Ansible usage.

There's a PR out on Tower to have tower set the GCP_ENV_TYPE environment variable to "tower". This is the other half of that: plumbing such values through the user agent headers.

Release Note for Downstream PRs (will be copied)

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
This PR seems not to have generated downstream PRs before, as of 61401a0.

Pull request statuses

No diff detected in terraform-provider-google-beta.
No diff detected in terraform-google-conversion.
No diff detected in terraform-provider-google.
No diff detected in Inspec.

New Pull Requests

I built this PR into one or more new PRs on other repositories, and when those are closed, this PR will also be merged and closed.
depends: modular-magician/ansible#302

[modular-magician]

Hi! I'm the modular magician, I work on Magic Modules.
I see that this PR has already had some downstream PRs generated. Any open downstreams are already updated to your most recent commit, 689b447.

Pull request statuses

No diff detected in terraform-provider-google-beta.
No diff detected in terraform-google-conversion.
No diff detected in terraform-provider-google.
Ansible already has an open PR.
No diff detected in Inspec.

New Pull Requests

I didn't open any new pull requests because of this PR.