Add :exclude_import to Terraform resource properties

[emilymye]

Add :exclude_import for non-importable resources (signed url key for example only has key name and a sensitive value which is not returned from server, so it seems weird to have an importer)

Precedes #1504

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[all]

[terraform]

[terraform-beta]

[ansible]

[inspec]

[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 94769b9e5b42e42b3c76ff462238e1b79b89742b.

Pull request statuses

No diff detected in terraform-google-conversion.
No diff detected in Ansible.
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: hashicorp/terraform-provider-google-beta#523
depends: hashicorp/terraform-provider-google#3234

[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, d7fca6c.

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 Ansible.
No diff detected in Inspec.

New Pull Requests

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

[rileykarson]

I'd have a slight preference for a false-y default like skip_import or exclude_import but that's probably just Terraform pre-GetOkExists burned into my head so not a blocker

[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, 5a8f154.

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 Ansible.
No diff detected in Inspec.

New Pull Requests

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