etcdutl: Add three parameters in order to support more complex hashkv compare operations

[evertrain]

Add three parameters to etcdutl hashkv, in order to support more complex hashkv compare operations.

--compact-rev is used to specify the lower bound for hash calculation in the snapshot, forming an interval with the upper bound --rev, which facilitates hash value comparison between different snapshots.

When --detailed is enabled, it can output hash values for different keys, making it easier to further pinpoint which keys are inconsistent when hash discrepancies are detected in different snapshot files. Additionally, --output can specify the file to save the key hash values. If --output is not specified, the output will be directed to standard output.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: evertrain
Once this PR has been reviewed and has the lgtm label, please assign serathius for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[k8s-ci-robot]

Hi @evertrain. 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.

Details

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.

[evertrain]

Hi @ahrtr , @serathius , could you help review this PR when you have a moment?

The above functionality has helped us identify the discrepancies in snapshots between different etcd members in the internal builds, which should be beneficial to the community.