Re-enable NodeLocal DNS Cache in user clusters

[rastislavs]

Signed-off-by: Rastislav Szabo rastislav@kubermatic.com

What this PR does / why we need it:
The NodeLocal DNS Cache is unconditionally deployed into user clusters, but currently it is not used due to #7058. This PR re-enables it.

The NodeLocal DNS Cache will be still deployed & enabled unconditionally, config / API option for enabling/disabling it will be introduced in #7074.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #7058

Special notes for your reviewer:

Documentation:

Does this PR introduce a user-facing change?:

Re-enable NodeLocal DNS Cache in user clusters.

[rastislavs]

/retest

[youssefazrak]

lgtm from my side

[irozzo-1A]

/lgtm
/approve
same here ;-)

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 30870a4b8bb8b6cbbe26eb36c5bf3613a6de6861

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: irozzo-1A, rastislavs

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• OWNERS [irozzo-1A,rastislavs]

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[rastislavs]

/cherrypick release/v2.17
/cherrypick release/v2.16

[kubermatic-bot]

@rastislavs: new pull request created: #7078

In response to this:

/cherrypick release/v2.17
/cherrypick release/v2.16

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/test-infra repository.

[rastislavs]

/cherrypick release/v2.16

[kubermatic-bot]

@rastislavs: #7075 failed to apply on top of branch "release/v2.16":

Applying: Fix enabling NodeLocal DNS Cache
Using index info to reconstruct a base tree...
M	cmd/seed-controller-manager/controllers.go
M	cmd/seed-controller-manager/options.go
Falling back to patching base and 3-way merge...
Auto-merging cmd/seed-controller-manager/options.go
CONFLICT (content): Merge conflict in cmd/seed-controller-manager/options.go
Auto-merging cmd/seed-controller-manager/controllers.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Fix enabling NodeLocal DNS Cache
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherrypick release/v2.16

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/test-infra repository.