Add make target to generate release manifests

[killianmuldoon]

Currently the only way to generate our release manifests with the CAPI Makefile is to run make release. Currently this runs the following targets:

	GIT_VERSION=$(RELEASE_TAG) $(MAKE) release-binaries
	# Set the manifest image to the production bucket.
	$(MAKE) manifest-modification REGISTRY=$(PROD_REGISTRY)
	## Build the manifests
	$(MAKE) release-manifests
	# Set the development manifest image to the staging bucket.
	$(MAKE) manifest-modification-dev REGISTRY=$(STAGING_REGISTRY)
	## Build the development manifests
	$(MAKE) release-manifests-dev
	## Clean the git artifacts modified in the release process
	$(MAKE) clean-release-git

With the first target - make release-binaries - taking by far the longest. We should introduce a way to simply generate the manifests without needing to create the binaries - i.e. introduce a target make release-manifests-all with the following targets:

release-manifests:
	# Set the manifest image to the production bucket.
	$(MAKE) manifest-modification REGISTRY=$(PROD_REGISTRY)
	## Build the manifests
	$(MAKE) release-manifests
	# Set the development manifest image to the staging bucket.
	$(MAKE) manifest-modification-dev REGISTRY=$(STAGING_REGISTRY)
	## Build the development manifests
	$(MAKE) release-manifests-dev
	## Clean the git artifacts modified in the release process
	$(MAKE) clean-release-git

Some additional restructuring could be done to combine the release-manifests-* and manifest-modification-* targets

And reduce the release target to:

	GIT_VERSION=$(RELEASE_TAG) $(MAKE) release-binaries
        $(MAKE) release-manifests-all

/kind cleanup

[killianmuldoon]

/assign

[fabriziopandini]

/triage accepted

[sbueringer]

Fine for me. Let's just be careful that we don't change the outputs (e.g. before/after refactoring diff)

[chiukapoor]

Hello Team, As per my understanding we need to create a target release-manifests-all in Makefile so that the user can generate all the manifests independent of release-binaries

The expected content of release-manifest-all

https://github.com/kubernetes-sigs/cluster-api/blob/844eff2f29d1119ec171efb8111e305e03c5bfca/Makefile#L832-L841

If no one is actively working on this issue, may I take it forward?

[killianmuldoon]

Thanks for taking this up @chiukapoor !

/unassign /assign @chiukapoor

[chiukapoor]

I have made changes as per the issue description but having some doubts as if it is safe to run make release for testing purposes on the local environment. As per my understanding of the code there is no code/release push that is happening but just wanted to be sure before I proceed.

[chiukapoor]

Hello @sbueringer, @fabriziopandini and @killianmuldoon, May you please help with the https://github.com/kubernetes-sigs/cluster-api/issues/6975#issuecomment-1323725276 query

[killianmuldoon]

It should be fine to run make release locally to test your changes :slightly_smiling_face:

[chiukapoor]

Thank you, I will test things out and will create a PR.

[chiukapoor]

@killianmuldoon, I have created the PR which adds make target release-manifests-all to generate all the release manifests independently of make release

While looking at release-manifests and release-manifests-dev targets, I couldn't find a way to combine them considering that both of them are using pretty different variables of folder paths. The same applies to manifest-modification-*. Please do let me know your views on this, probably there is something I may be missing.