Performance and security enhancement for ingress-dns addon

[woodcockjosh]

This is a performance and security enhancement for the ingress-dns addon.

1. Resolves issue where ingress-dns pod is evicted when tcp connection cannot be established by ingress nginx controller
2. Removes cluster-admin role for ingress-dns addon pod
3. Removes use of ingress-nginx as passthrough
4. Ingress dns pod uses host network and binds only to Pod IP / Node IP rather than 0.0.0.0
5. Tcp routing removed as it is not used
6. Pod IP / Node IP is used as minikube IP which is the same when pod is using host network rather than querying the cluster IP

[k8s-ci-robot]

Hi @woodcockjosh. Thanks for your PR.

I'm waiting for a kubernetes 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.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: woodcockjosh
To complete the pull request process, please assign medyagh
You can assign the PR to them by writing /assign @medyagh in a comment when ready.

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[minikube-bot]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #5614 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5614   +/-   ##
=======================================
  Coverage   36.89%   36.89%           
=======================================
  Files         102      102           
  Lines        7369     7369           
=======================================
  Hits         2719     2719           
  Misses       4297     4297           
  Partials      353      353

Impacted Files	Coverage Δ
pkg/minikube/assets/addons.go	36.66% <ø> (ø)	⬆️

[woodcockjosh]

/assign @medyagh

[tstromberg]

@minikube-bot OK to test