FR: Merge duplicate instructions on GCP onboarding, roles, service enablements, billing and bootstrap project - continuation of 1175

[obriensystems]

TL;DR

assigned to https://github.com/fmichaelobrien
PR developed in fork GoogleCloudPlatform/pbmm-on-gcp-onboarding#407

specifically the prerequisites sections with roles and service enablements duplicated across
"For the user who will run the procedures in this document, grant the following roles:"
and
"Enable the following additional services on your current bootstrap project"
in
https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/README.md#prerequisites
https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/README-Terraform-Cloud.md#requirements
https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/README-GitLab.md#deploying-a-gitlab-cicd-compatible-environment
https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/README-GitHub.md#requirements

no section in

• https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/README-Jenkins.md#overview

Check each terraform module specific to the build agent - for example

• https://github.com/terraform-google-modules/terraform-example-foundation/blob/master/0-bootstrap/modules/jenkins-agent/README.md#Requirements

Fix:
detail all common roles and service enablements in the main readme, put links back to this readme from the extended readme's and add specific roles/services per gitlab/github/terraform-cloud/ado in extended readme's

see

• #362 - bootstrap prereq GoogleCloudPlatform/pbmm-on-gcp-onboarding#363
• Add bootstrap project requirements / project service enablements / readme / sh scripting / super admin roles - in prep of running 0-bootstrap GoogleCloudPlatform/pbmm-on-gcp-onboarding#362
• fix: Add roles and service enablements to bootstrap project #1175
• ER: Canadian Government Federal and Provincial Clients: Fortinet based hub-spoke Landing Zone #1133

Terraform Resources

No response

Detailed design

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Additional information

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