create github-mgmt stewards team

[galargh]

This PR creates a new team called github-mgmt stewards and grants it write access to github-mgmt repository.

The general idea is to build up github-mgmt stewards team with users who are:

• familiar with GitHub Management
• trusted within the org
• want/need to be able to triage/merge PRs

github-mgmt stewards should be the only team with write access to github-mgmt repository, eventually

Here's my proposal for initial members:

• @BigLep
• @galargh
• @laurentsenta

Here is a short intro doc to GitHub Management Stewards I prepared - https://github.com/testground/github-mgmt/blob/3eedb7927d567f2ddb713569561ce2cb5ecafbfe/docs/STEWARDSHIP.md This is intended only as a v0 and should definitely be updated according to how the team in this org intends to organise their work.

Similar change was introduced recently in the ipfs org. See ipfs/github-mgmt#37 for more details.

TODO

• get approval for initial github-mgmt stewards team members from Steve
• prepare 1 page document on what is expected of a github-mgmt steward
• mention proposed members once the PR is ready for review

[github-actions]

Before merge, verify that all the following plans are correct. They will be applied as-is after the merge.

Terraform plans

testground

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  + create
  ~ update in-place
  - destroy

Terraform will perform the following actions:

  # github_repository_file.this["github-mgmt/CODEOWNERS"] will be updated in-place
  ~ resource "github_repository_file" "this" {
      ~ content             = <<-EOT
          - *       @galargh
          + # The ipdx team is responsible for GitHub Management maintenance
          + * @testground/ipdx
          + 
          + # The github-mgmt stewards team is responsible for triaging/reviewing configuration change requests
          + # The ipdx team is added here temporarily to witness use patterns in github-mgmt
          + /github/testground.yml @testground/github-mgmt-stewards @testground/ipdx
        EOT
        id                  = "github-mgmt/CODEOWNERS"
        # (9 unchanged attributes hidden)
    }

  # github_team.this["github-mgmt stewards"] will be created
  + resource "github_team" "this" {
      + create_default_maintainer = false
      + description               = "Users that are effectively org admins"
      + etag                      = (known after apply)
      + id                        = (known after apply)
      + members_count             = (known after apply)
      + name                      = "github-mgmt stewards"
      + node_id                   = (known after apply)
      + privacy                   = "closed"
      + slug                      = (known after apply)
    }

  # github_team.this["ipdx"] will be created
  + resource "github_team" "this" {
      + create_default_maintainer = false
      + etag                      = (known after apply)
      + id                        = (known after apply)
      + members_count             = (known after apply)
      + name                      = "ipdx"
      + node_id                   = (known after apply)
      + parent_team_id            = 6319375
      + privacy                   = "closed"
      + slug                      = (known after apply)
    }

  # github_team_membership.this["github-mgmt stewards:BigLep"] will be created
  + resource "github_team_membership" "this" {
      + etag     = (known after apply)
      + id       = (known after apply)
      + role     = "maintainer"
      + team_id  = (known after apply)
      + username = "BigLep"
    }

  # github_team_membership.this["github-mgmt stewards:galargh"] will be created
  + resource "github_team_membership" "this" {
      + etag     = (known after apply)
      + id       = (known after apply)
      + role     = "maintainer"
      + team_id  = (known after apply)
      + username = "galargh"
    }

  # github_team_membership.this["github-mgmt stewards:laurentsenta"] will be created
  + resource "github_team_membership" "this" {
      + etag     = (known after apply)
      + id       = (known after apply)
      + role     = "maintainer"
      + team_id  = (known after apply)
      + username = "laurentsenta"
    }

  # github_team_membership.this["ipdx:galargh"] will be created
  + resource "github_team_membership" "this" {
      + etag     = (known after apply)
      + id       = (known after apply)
      + role     = "maintainer"
      + team_id  = (known after apply)
      + username = "galargh"
    }

  # github_team_membership.this["ipdx:laurentsenta"] will be created
  + resource "github_team_membership" "this" {
      + etag     = (known after apply)
      + id       = (known after apply)
      + role     = "maintainer"
      + team_id  = (known after apply)
      + username = "laurentsenta"
    }

  # github_team_repository.this["github-mgmt stewards:github-mgmt"] will be created
  + resource "github_team_repository" "this" {
      + etag       = (known after apply)
      + id         = (known after apply)
      + permission = "push"
      + repository = "github-mgmt"
      + team_id    = (known after apply)
    }

  # github_team_repository.this["ipdx:github-mgmt"] will be created
  + resource "github_team_repository" "this" {
      + etag       = (known after apply)
      + id         = (known after apply)
      + permission = "maintain"
      + repository = "github-mgmt"
      + team_id    = (known after apply)
    }

  # github_team_repository.this["w3dt-stewards:github-mgmt"] will be destroyed
  # (because key ["w3dt-stewards:github-mgmt"] is not in for_each map)
  - resource "github_team_repository" "this" {
      - etag       = "W/\"d08c3fb659ed3a445cf6915c859973917d4d94038b4628b7c7af3315d5e58a4c\"" -> null
      - id         = "6319375:github-mgmt" -> null
      - permission = "maintain" -> null
      - repository = "github-mgmt" -> null
      - team_id    = "6319375" -> null
    }

Plan: 9 to add, 1 to change, 1 to destroy.

[BigLep]

Looks good once Laurent's comments are incorporated.