[RELEASE-1.4] Use internal-encryption to deploy internal certificates automatically

[nak3]

This patch cherr-pick the upstream commit knative-extensions@b9b1e8b.

[codecov-commenter]

Codecov Report

Merging #23 (3b4778e) into release-1.4 (08c9529) will decrease coverage by 0.43%.
The diff coverage is 62.50%.

@@               Coverage Diff               @@
##           release-1.4      #23      +/-   ##
===============================================
- Coverage        81.83%   81.39%   -0.44%     
===============================================
  Files               18       18              
  Lines             1167     1172       +5     
===============================================
- Hits               955      954       -1     
- Misses             168      174       +6     
  Partials            44       44              

Impacted Files	Coverage Δ
pkg/config/config.go	0.00% <0.00%> (ø)
pkg/generator/ingress_translator.go	85.55% <100.00%> (ø)
pkg/reconciler/ingress/config/store.go	91.66% <100.00%> (-0.23%)	⬇️

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[nak3]

@skonto Hmm... I pinned knative.dev/hack and knative.dev/pkg in go.mod:

replace (
	knative.dev/hack => knative.dev/hack v0.0.0-20220411131823-6ffd8417de7c
	knative.dev/pkg => knative.dev/pkg v0.0.0-20220412134708-e325df66cb51
)

so I think it makes the difference between upstream and downstream. Without these pinning, knative.dev/pkg will be bumped to v1.6's knative.dev/pkg which is not expected.

[skonto]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nak3, skonto

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[skonto]

@nak3 feel free to merge manually.