etcd: Build image 3.5.7-0

[mzaian]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Build Image for v3.5.7.

Which issue(s) this PR fixes:
Fixes NONE #

Does this PR introduce a user-facing change?:

NONE

[cici37]

/test pull-kubernetes-unit
/assign @jpbetz
for etcd approval
/triage accepted

[hakman]

@dims There's been some interesting changes in how etcd builds the official images.
The dependency on busybox has been removed in etcd-io/etcd#15036, which may allow just using the official images and adding another layer with the cp utility (is it still needed?).

/lgtm
/assign @dims
/release-note-none

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: cccae22487189edcb15bde8d9951b7d81d6d5b94

[serathius]

/lgtm
/approve

[dims]

/lgtm
/approve

Are you talking about https://github.com/etcd-io/etcd/pull/15036/files#diff-2f60a4131f094ce9749a4e155ad2960ec62bbe04f0a1f33b0cbf3f7bf2d971c6R35 @hakman ?

[mzaian]

/retest

[pacoxu]

/approve
/retest

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dims, mzaian, pacoxu, serathius

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

The pull request process is described here

Needs approval from an approver in each of these files:

• build/OWNERS [dims]
• cluster/images/etcd/OWNERS [dims,serathius]

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[hakman]

Are you talking about https://github.com/etcd-io/etcd/pull/15036/files#diff-2f60a4131f094ce9749a4e155ad2960ec62bbe04f0a1f33b0cbf3f7bf2d971c6R35 @hakman ?

@dims Yes, that's the commit. The image seems pretty similar to the ones built from cluster/images/etcd/Dockerfile, except for a few extra files:

kubernetes/cluster/images/etcd/Dockerfile

Lines 37 to 38 in 81df4d7

	COPY cp* /bin/
	COPY migrate-if-needed.sh migrate /usr/local/bin/

[dims]

@hakman in our etcd image, we have a migration script that has helped us move between etcd versions just by updating to a new etcd container. We can open a fresh issue and vote on if we really need that anymore

• https://github.com/kubernetes/kubernetes/blob/master/cluster/images/etcd/migrate/migrate.go#L32-L44
• https://github.com/kubernetes/kubernetes/blob/master/cluster/images/etcd/README.md?plain=1#L21-L38

@wojtek-t could we get rid of the migrate stuff?