Add build subtargets based on ARCH

[ArkaSaha30]

This PR will group similar targets as per architecture into subtargets to build. It also adds a build-all target to build all OS-ARCH combinations.

Conversation: kubernetes/test-infra#32672 (comment)
Fixes: kubernetes/test-infra#32672

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

[k8s-ci-robot]

Hi @ArkaSaha30. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[jmhbnz]

/ok-to-test

[ahrtr]

We have two options,

• [preferred] add Makefile targets build-limux-amd64, build-linux-arm64, etc. and build-all. We don't need to add or change any script files.

build-linux-amd64:
    GOOS=linux GOARCH=amd64 GO_BUILD_FLAGS="${GO_BUILD_FLAGS} -v -mod=readonly" ./scripts/build.sh

......

build-all: build-limux-amd64 build-linux-arm64 ......

• This PR

[ArkaSaha30]

/retest pull-etcd-integration-1-cpu-amd64

[k8s-ci-robot]

@ArkaSaha30: The /retest command does not accept any targets.
The following commands are available to trigger required jobs:

• /test pull-etcd-build
• /test pull-etcd-unit-test
• /test pull-etcd-verify

The following commands are available to trigger optional jobs:

• /test pull-etcd-e2e-amd64
• /test pull-etcd-integration-1-cpu-amd64

Use /test all to run all jobs.

In response to this:

/retest pull-etcd-integration-1-cpu-amd64

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[ArkaSaha30]

/test pull-etcd-integration-1-cpu-amd64

[ahrtr]

LGTM

Thanks @ArkaSaha30

[jmhbnz]

LGTM - Thanks @serathius and @ArkaSaha30.

[ivanvc]

Can we have an agreement on kubernetes/test-infra#32672 (comment) + #18083 (comment) before merging this PR? 😅