Images: Trigger NGINX build.

[Gacko]

This triggers a build of the NGINX base image from the release-1.11 branch as the state of main currently differs from those on the release-1.xx branches. We therefore need a NGINX base image build we can use in release-1.xx branches.

Code-wise the NGINX base image on release-1.11 does not differ from release-1.10. So it's safe to also use the resulting image on release-1.10 even though this might be a bit intransparent.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Gacko

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[Gacko]

/triage accepted
/kind cleanup
/priority backlog

[Gacko]

/cherry-pick release-1.10

[k8s-infra-cherrypick-robot]

@Gacko: once the present PR merges, I will cherry-pick it on top of release-1.10 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.10

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[k8s-infra-cherrypick-robot]

@Gacko: new pull request created: #12077

In response to this:

/cherry-pick release-1.10

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.