feat: Make Cloud Source Repos optional

[realtimetodie]

Adds a new input variable create_cloud_source_repos (bool), whether CSR repos should be created. The default value is true.

This feature is useful for users that want to trigger Cloud Build outside of CSR (eg. google_cloudbuild_trigger github).

[rjerrems]

Thanks for the contribution @aheadmode - it looks like there are a few failures including some linting failures. You can run:

make docker_test_lint in order to run those linting tests locally. The integration tests are failing with this error:

Error: Reference to undeclared local value
       
         on ../../../modules/cloudbuild/main.tf line 160, in resource "google_project_iam_member" "org_admins_source_repo_admin":
        160:   count   = local.create_cloud_source_repos ? 1 : 0
       
       A local value with the name "create_cloud_source_repos" has not been declared.

You can also run integration tests locally if you wish, instructions are here:

https://github.com/terraform-google-modules/terraform-google-bootstrap/blob/master/CONTRIBUTING.md

[realtimetodie]

The testing suite does not work. Some tests fail always

Error: Unsupported Terraform Core version

  on .terraform/modules/seed_project/versions.tf line 18, in terraform:
  18:   required_version = "~> 0.12.6"

Entering the container locally (gcr.io/cloud-foundation-cicd/cft/developer-tools:0)

$ terraform -v
Terraform v0.13.4

[rjerrems]

Thanks for reporting that issue @aheadmode - can you try merging changes from master? You should now be able to use the module with terraform 0.13

[rjerrems]

LGTM