add example for gitlab omnibus setup using terraform-aws-gitlab module

examples/complete-gitlab-setup/backend.tf

@@ -0,0 +1,7 @@
+terraform {
+  backend "s3" {
+    bucket = "gitlab-tf"
+    key    = "gitlab/terraform.tfstate"
+    region = "ap-south-1"
+  }
+}

examples/complete-gitlab-setup/gitlab_config/gitlab_additional.rb

@@ -0,0 +1,8 @@
+gitlab_rails['omniauth_providers'] = [
+  {
+    name: "google_oauth2",
+    app_id: "google_oauth_app_id",
+    app_secret: "google_oauth_app_secret",
+    args: { access_type: "offline", approval_prompt: "" }
+  }
+]

examples/complete-gitlab-setup/main.tf

@@ -0,0 +1,40 @@
+module "gitlab" {
+  source = "../../"
+
+  create_gitlab_domain = true
+  gitlab_domain        = "gitlab"
+  gitlab_fqdn          = "gitlab.example.com"
+  hosted_zone          = "example.com"
+  private_subnet_id    = "subnet-u8dy389d78qhh338"
+  public_subnet_ids = [
+    "subnet-h89dj8d3j2jd8", "subnet-jd8jq3dj89qj9jd3", "subnet-jd89jh89dj9dj9j9qw"
+  ]
+  volume_size                         = 30
+  volume_type                         = "gp3"
+  vpc_id                              = "vpc-89rh423789hr982h98"
+  create_acm_certificate              = true
+  healthcheck_matcher                 = "200"
+  healthcheck_path                    = "/-/readiness"
+  gitlab_ssh_public_key               = "ssh publickey"
+  gitlab_pg_allocated_storage         = 100
+  gitlab_pg_db_instance_class         = "db.m5.large"
+  gitlab_pg_db_name                   = "gitlabhq_production"
+  gitlab_pg_engine_version            = "12.11"
+  gitlab_pg_password                  = "foobarbaz"
+  gitlab_pg_publicly_accessible       = false
+  gitlab_pg_storage_type              = "gp3"
+  gitlab_pg_subnet_ids                = ["subnet-u8dy389d78qhh338", "subnet-hde38hd89qhdwhw"]
+  gitlab_pg_username                  = "gitlab"
+  gitlab_redis_engine_version         = "7.0"
+  gitlab_redis_node_type              = "cache.t3.medium"
+  gitlab_redis_create_parameter_group = true
+  gitlab_redis_parameter_group = {
+    name   = "gitlab-redis"
+    family = "redis7"
+  }
+  gitlab_redis_subnet_ids    = ["subnet-u8dy389d78qhh338", "subnet-hde38hd89qhdwhw"]
+  enable_gitlab_backup_to_s3 = true
+  gitlab_backup_bucket_name  = "example-gitlab-backup"
+  private_key                = var.private_key
+  create_ses_identity        = true
+}

examples/complete-gitlab-setup/outputs.tf

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+output "gitlab_pg_address" {
+  value       = module.gitlab.gitlab_pg_address
+  description = "Gitlab Postgres address"
+}
+
+output "gitlab_redis_address" {
+  value       = module.gitlab.gitlab_redis_address
+  description = "Gitlab Redis address"
+}
+
+output "gitlab_url" {
+  value = module.gitlab.gitlab_complete_url
+}

examples/complete-gitlab-setup/variables.tf

@@ -0,0 +1,4 @@
+variable "private_key" {
+  type        = string
+  description = "Private key to execute ansible playbook on Gitlab instance."
+}

examples/complete-gitlab-setup/versions.tf

@@ -0,0 +1,14 @@
+terraform {
+  required_version = ">= 1.3"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.40"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 3.2.1"
+    }
+  }
+}