Decouple release manifests

[bourgeoisor]

This PR simplifies the release making process and increases the consistency with the Bank of Anthos process (https://github.com/GoogleCloudPlatform/bank-of-anthos/blob/main/release/make-release.sh)

Changes to note:

• the make-release.sh script(s) has had its lines-of-code reduced by 120 (from 190 to 70)
• the kubernetes-manifests/ directory was renamed to dev-kubernetes-manifests/ (the "dev" manifests)
• the release/ directory was renamed to kubernetes-manifests/ (the "release" manifests)
• the istio-manifests/ directory stays as-is

TODOs:

• Updated docs
  • Go through go/online-boutique-usage and prepare necessary CLs, etc.
  • Update .md files in this repo
• Update .yaml files of GitHub workflows
• Reinstate the region tags

Open questions:

• should we also rename the hacks/ directory to release/ to match Bank of Anthos (https://github.com/GoogleCloudPlatform/bank-of-anthos/tree/main/release)?

Testing

I have tested this with a fake release (v1.1.1):

~ ./hack/make-release.sh

+ REPO_PREFIX=gcr.io/<project-id>/msd
+ REPO_PREFIX_SED='gcr.io\/<project-id>\/msd'
+++ realpath -s ./hack/make-release.sh
++ dirname /Users/obourgeois/workspace/repos/microservices-demo/hack/make-release.sh
+ SCRIPT_DIR=/Users/obourgeois/workspace/repos/microservices-demo/hack
+ REPO_ROOT=/Users/obourgeois/workspace/repos/microservices-demo/hack/..
+ cd /Users/obourgeois/workspace/repos/microservices-demo/hack/..
+ [[ ! v1.1.1 =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]
+ command -v gcloud
+ rm -rf /Users/obourgeois/workspace/repos/microservices-demo/hack/../kubernetes-manifests
+ mkdir /Users/obourgeois/workspace/repos/microservices-demo/hack/../kubernetes-manifests
+ cp -a /Users/obourgeois/workspace/repos/microservices-demo/hack/../dev-kubernetes-manifests/. /Users/obourgeois/workspace/repos/microservices-demo/hack/../kubernetes-manifests/
+ find /Users/obourgeois/workspace/repos/microservices-demo/hack/../kubernetes-manifests -name '*.yaml' -exec sed -i -e 's'\''image: \(.*\)'\''image: gcr.io/<project-id>/msd\/\1:v1.1.1'\''g' '{}' ';'
+ skaffold config set local-cluster false
set value local-cluster to false for context gke_<project-id>_us-central1-c_boa-tests
+ skaffold build --default-repo=gcr.io/<project-id>/msd --tag=v1.1.1
Generating tags...
 - emailservice -> gcr.io/<project-id>/msd/emailservice:v1.1.1
 - productcatalogservice -> gcr.io/<project-id>/msd/productcatalogservice:v1.1.1
 - recommendationservice -> gcr.io/<project-id>/msd/recommendationservice:v1.1.1
 - shippingservice -> gcr.io/<project-id>/msd/shippingservice:v1.1.1
 - checkoutservice -> gcr.io/<project-id>/msd/checkoutservice:v1.1.1
 - paymentservice -> gcr.io/<project-id>/msd/paymentservice:v1.1.1
 - currencyservice -> gcr.io/<project-id>/msd/currencyservice:v1.1.1
 - cartservice -> gcr.io/<project-id>/msd/cartservice:v1.1.1
 - frontend -> gcr.io/<project-id>/msd/frontend:v1.1.1
 - adservice -> gcr.io/<project-id>/msd/adservice:v1.1.1
 - loadgenerator -> gcr.io/<project-id>/msd/loadgenerator:v1.1.1

The images were pushed on my registry:

[snippet-bot]

Here is the summary of changes.

You are about to delete 2 region tags.

• hack/make-release-artifacts.sh:79, tag gke_release_kubernetes_manifests_microservices_demo
• hack/make-release-artifacts.sh:87, tag servicemesh_release_istio_manifests_microservices_demo

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[NimJay]

Thanks for initiating this, @bourgeoisor!
This PR is definitely going to take us some time.

I assume the changes from the PR will definitely require a "major" bump in the versioning of Online Boutique.
So the release after merging this PR would be v1.0.0 — not v0.3.x.
Reason: kubectl apply -f ./release/kubernetes-manifests.yaml will no longer work — which is used by a lot of docs/videos/README.md/etc.
Do you think we should create a separate v0.3.7 release first — since a lot has changed on main since v0.3.6?

[NimJay]

Note from 1-on-1 with Olivier:
We can keep the release/ folder (until all tutorials/docs are updated).

[mathieu-benoit]

Out of curiosity, @NimJay and @bourgeoisor, is this PR still a thing? Or should we close it and reconsider this in a future/following PR? We have limited number of PR opened with Renovate, so wondering if we can close this one?

[NimJay]

I'm happy with closing it (but also fine with leaving it open, especially, if we expect to make progress on this in the coming weeks).
I'll leave it up to @bourgeoisor to decide. :)

[bourgeoisor]

Let's close for now -- We can revisit when we implement kustomize and co.