Improve identity v3 support

[sbourlon]

OpenStack identity v3 instroduced domains which I added in this PR

• Add project domain and domain scoping
• Add user domain
• Add default domain in case the domain scope and the user domain are the same

Please, let me know if I am missing something or if this PR needs to be improved.

[coveralls]

Coverage decreased (-0.07%) to 80.87% when pulling d9fef25 on sbourlon:improve-identity-v3-support into d47105c on rackspace:master.

[jrperritt]

Thank you for the PR, but this repo is currently in feature-freeze mode. See #592

[sbourlon]

Thanks @jrperritt for the update. Would it still be possible to merge the PR after the feature-freeze mode is done?

[jrperritt]

Would it still be possible to merge the PR after the feature-freeze mode is done?

In this repo, no. In gophercloud/gophercloud, yes. The public APIs are nearly identical and compatible with one another. As in, almost all code using this library can switch to using the new library with a single gofmt command replacing the import lines, and it should just work. For code that does require changes, I'd expect them to be minor ones.

[sbourlon]

Thanks. I will test the PR against the new repo and sent a new PR to gophercloud/gophercloud.

[jrperritt]

Before you start, please read the description of #592 in its entirety. The new repo won't accept PRs until the contributing guide is updated and the API stabilized. You can track issue #592 for updates on the migration and status of the new repo.

[jrperritt]

Closing this. Hopefully we'll see it in the new repo

[fatmcgav]

@sbourlon / @jrperritt Any joy with making these changes against gophercloud/gophercloud?

[jtopjian]

@sbourlon @fatmcgav While reviewing hashicorp/terraform#7041, I spent the past few evenings looking over the current gophercloud/gophercloud v3 implementation and I think everything is already in place. I even went as far as re-implementing the scoping portion of this PR and saw that the end result was the same.

While there is no direct support for OS_PROJECT_DOMAIN_*, OS_USER_DOMAIN_*, and OS_DEFAULT_DOMAIN, by using the correct combinations of User*, Domain*, and Project*, you can achieve the correct scoping.

However, I could be wrong. If so, can someone please provide an example of where scoping still needs work in the new Gophercloud repository?

[fatmcgav]

@jtopjian I'm inclined to agree, as I've been running TF using the latest code and using domain and project scoping quite happily.

Cheers
Gav