Enable autoscaling/v2beta1 by default

[DirectXMan12]

The PR which graduated autoscaling/v2alpha1 to beta accidentally
missed enabling the API group by default. This rectifies that.

Release note:

The autoscaling/v2beta1 API group is now enabled by default.

[DirectXMan12]

/cc @piosz @luxas

[piosz]

/lgtm

[DirectXMan12]

(would help if I actually had the right import ;-) )

[luxas]

/lgtm

[luxas]

/retest
cc @kubernetes/sig-autoscaling-pr-reviews @kubernetes/sig-api-machinery-pr-reviews
FYI @kubernetes/kubernetes-release-managers this needs to get into v1.8, was an oversight in the earlier PR(s)

[sttts]

/approve no-issue

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: DirectXMan12, luxas, piosz, sttts

Associated issue requirement bypassed by: sttts

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

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• pkg/master/OWNERS [sttts]

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[k8s-github-robot]

/test all [submit-queue is verifying that this PR is safe to merge]

[luxas]

/retest

…

On 18 Sep 2017, at 10:36, Kubernetes Submit Queue ***@***.***> wrote: /test all [submit-queue is verifying that this PR is safe to merge] — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub, or mute the thread.

[lavalamp]

Removing the sig/api-machinery label: SIG API Machinery doesn't own the contents of the API.

[fejta-bot]

/retest
This bot automatically retries jobs that failed/flaked on approved PRs (send feedback to @fejta).

Review the full test history for this PR.

[k8s-github-robot]

Automatic merge from submit-queue (batch tested with PRs 48970, 52497, 51367, 52549, 52541). If you want to cherry-pick this change to another branch, please follow the instructions here..