Update auto-deploy-image to v0.15.0

- Changed the default AUTO_DEVOPS_POSTGRES_CHANNEL to 2. This will
  result in deployments failing for users still on channel 1, with
  instructions on how to stay on channel 1 or move to channel 2.

- Moved the default value for POSTGRES_VERSION out of
  Auto-DevOps.gitlab-ci.yml into auto-deploy-image and
  Test.gitlab-ci.yml to give auto-deploy-image the flexibility to set a
  different default version depending on the value of
  AUTO_DEVOPS_POSTGRES_CHANNEL

See https://gitlab.com/gitlab-org/cluster-integration/auto-deploy-image/-/compare/v0.14.0...v0.15.0

changelogs/unreleased/update-ado-image-to-0-15-0.yml

+---
+title: Update auto-deploy-image to v0.15.0, with an upgraded PostgreSQL chart used
+  by default for Auto DevOps deployments
+merge_request: 31799
+author:
+type: changed

doc/topics/autodevops/customize.md

@@ -245,23 +245,19 @@ postgres://user:password@postgres-host:postgres-port/postgres-database
 
 CAUTION: **Deprecation**
 The variable `AUTO_DEVOPS_POSTGRES_CHANNEL` that controls default provisioned
-PostgreSQL currently defaults to `1`. This value is scheduled to change to `2` in
-[GitLab 13.0](https://gitlab.com/gitlab-org/gitlab/-/issues/210499).
+PostgreSQL was changed to `2` in [GitLab 13.0](https://gitlab.com/gitlab-org/gitlab/-/issues/210499).
+To keep using the old PostgreSQL, set the `AUTO_DEVOPS_POSTGRES_CHANNEL` variable to
+`1`.
 
 The version of the chart used to provision PostgreSQL:
 
+- Is 8.2.1 in GitLab 13.0 and later, but can be set back to 0.7.1 if needed.
+- Can be set to from 0.7.1 to 8.2.1 in GitLab 12.9 and 12.10.
 - Is 0.7.1 in GitLab 12.8 and earlier.
-- Can be set to from 0.7.1 to 8.2.1 in GitLab 12.9 and later.
 
 GitLab encourages users to [migrate their database](upgrading_postgresql.md)
 to the newer PostgreSQL.
 
-To use the new PostgreSQL:
-
-- New projects can set the `AUTO_DEVOPS_POSTGRES_CHANNEL` variable to `2`.
-- Old projects can be upgraded by following the guide to
-  [upgrading PostgresSQL](upgrading_postgresql.md).
-
 ### Using external PostgreSQL database providers
 
 While Auto DevOps provides out-of-the-box support for a PostgreSQL container for
@@ -352,7 +348,7 @@ The following table lists variables related to the database.
 | `POSTGRES_USER`                         | The PostgreSQL user. Defaults to `user`. Set it to use a custom username. |
 | `POSTGRES_PASSWORD`                     | The PostgreSQL password. Defaults to `testing-password`. Set it to use a custom password. |
 | `POSTGRES_DB`                           | The PostgreSQL database name. Defaults to the value of [`$CI_ENVIRONMENT_SLUG`](../../ci/variables/README.md#predefined-environment-variables). Set it to use a custom database name. |
-| `POSTGRES_VERSION`                      | Tag for the [`postgres` Docker image](https://hub.docker.com/_/postgres) to use. Defaults to `11.7`. |
+| `POSTGRES_VERSION`                      | Tag for the [`postgres` Docker image](https://hub.docker.com/_/postgres) to use. Defaults to `9.6.16` for tests and deployments as of GitLab 13.0 (previously `9.6.2`). If `AUTO_DEVOPS_POSTGRES_CHANNEL` is set to `1`, deployments will use the default version `9.6.2`. |
 
 ### Disable jobs
 

doc/topics/autodevops/stages.md

@@ -324,34 +324,40 @@ as it attempts to fetch the image using `CI_REGISTRY_PASSWORD`.
 
 > - [Introduced](https://gitlab.com/gitlab-org/charts/auto-deploy-app/-/merge_requests/51) in GitLab 12.8.
 > - Support for deploying a PostgreSQL version that supports Kubernetes 1.16+ was [introduced](https://gitlab.com/gitlab-org/cluster-integration/auto-deploy-image/-/merge_requests/49) in GitLab 12.9.
+> - Supported out of the box for new deployments as of GitLab 13.0.
 
 CAUTION: **Deprecation**
-The default value of `extensions/v1beta1` for the `deploymentApiVersion` setting is
-deprecated, and is scheduled to be changed to a new default of `apps/v1` in
-[GitLab 13.0](https://gitlab.com/gitlab-org/charts/auto-deploy-app/issues/47).
+The default value for the `deploymentApiVersion` setting was changed from
+`extensions/v1beta` to `apps/v1` in [GitLab 13.0](https://gitlab.com/gitlab-org/charts/auto-deploy-app/issues/47).
 
 In Kubernetes 1.16 and later, a number of
 [APIs were removed](https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/),
 including support for `Deployment` in the `extensions/v1beta1` version.
 
-To use Auto Deploy on a Kubernetes 1.16+ cluster, you must opt-in to using a
-version of the PostgreSQL chart that supports Kubernetes 1.16 and higher:
+To use Auto Deploy on a Kubernetes 1.16+ cluster:
 
-1. Set the following in the [`.gitlab/auto-deploy-values.yaml` file](customize.md#customize-values-for-helm-chart):
+1. If you are deploying your application for the first time on GitLab 13.0 or
+   newer, no configuration should be required.
+
+1. On GitLab 12.10 or older, set the following in the [`.gitlab/auto-deploy-values.yaml` file](customize.md#customize-values-for-helm-chart):
 
    ```yml
    deploymentApiVersion: apps/v1
    ```
 
-1. Set the:
+1. If you have an in-cluster PostgreSQL database installed with
+   `AUTO_DEVOPS_POSTGRES_CHANNEL` set to `1`, follow the [guide to upgrade
+   PostgreSQL](upgrading_postgresql.md).
 
-   - `AUTO_DEVOPS_POSTGRES_CHANNEL` variable to `2`.
-   - `POSTGRES_VERSION` variable to `11.7` or higher.
+1. If you are deploying your application for the first time and are using
+   GitLab 12.9 or 12.10, set `AUTO_DEVOPS_POSTGRES_CHANNEL` to `2`.
 
-DANGER: **Danger:** Opting into `AUTO_DEVOPS_POSTGRES_CHANNEL` version `2` deletes
-the version `1` PostgreSQL database. Follow the
-[guide to upgrading PostgreSQL](upgrading_postgresql.md) to back up and restore
-your database before opting into version `2`.
+DANGER: **Danger:** On GitLab 12.9 and 12.10, opting into
+`AUTO_DEVOPS_POSTGRES_CHANNEL` version `2` deletes the version `1` PostgreSQL
+database. Follow the [guide to upgrading PostgreSQL](upgrading_postgresql.md)
+to back up and restore your database before opting into version `2` (On
+GitLab 13.0, an additional variable is required to trigger the database
+deletion).
 
 ### Migrations
 

lib/gitlab/ci/templates/Auto-DevOps.gitlab-ci.yml

@@ -48,7 +48,6 @@ variables:
   POSTGRES_PASSWORD: testing-password
   POSTGRES_ENABLED: "true"
   POSTGRES_DB: $CI_ENVIRONMENT_SLUG
-  POSTGRES_VERSION: 9.6.2
 
   DOCKER_DRIVER: overlay2
 

lib/gitlab/ci/templates/Jobs/DAST-Default-Branch-Deploy.gitlab-ci.yml

 .dast-auto-deploy:
-  image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v0.10.0"
+  image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v0.15.0"
 
 dast_environment_deploy:
   extends: .dast-auto-deploy

lib/gitlab/ci/templates/Jobs/Deploy.gitlab-ci.yml

 .auto-deploy:
-  image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v0.14.0"
+  image: "registry.gitlab.com/gitlab-org/cluster-integration/auto-deploy-image:v0.15.0"
 
 review:
   extends: .auto-deploy

lib/gitlab/ci/templates/Jobs/Test.gitlab-ci.yml

 test:
-  services:
-    - "postgres:${POSTGRES_VERSION}"
   variables:
+    POSTGRES_VERSION: 9.6.16
     POSTGRES_DB: test
+  services:
+    - "postgres:${POSTGRES_VERSION}"
   stage: test
   image: gliderlabs/herokuish:latest
   needs: []