Nodelocalcache configure resources

[commixon]

In this PR the NodeLocalDNSConfig is updated to hold MemoryRequest and CPURequest (as it is done in the KubeDNSConfig).

We end up with the following new cluster_spec (as updated in the documentation):

    nodeLocalDNS:
      enabled: true
      memoryRequest: 5Mi
      cpuRequest: 25m

5Mi and 25m were chosen as they are the current defaults.

The reasoning behind this is that we would like to avoid patching the daemonset once kops has it deployed and be able to configure everything in the cluster spec config.

I am by no means an expert neither in go nor in contributing to the kops repo, so if I have forgotten anything please feel free to fire away any comments, additions, requirements or anything else that I may have overseen.

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[k8s-ci-robot]

Hi @commixon. 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.

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[commixon]

/check-cla

[commixon]

/assign @KashifSaadat

[hakman]

Congrats! For your first PR here, you got further than most that tried, without any help.
I believe the only thing remaining is to run make apimachinery and commit the changes.
/ok-to-test

[commixon]

Thanks @hakman ! Just commited the changes after running make apimachinery. Let me know what else is needed.

[hakman]

I think this pretty much ready to merge. Please squash the commits and force push, to keep things clean.

[commixon]

Just did that. Thanks a lot @hakman

[hakman]

Thanks for doing this @commixon.
/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: commixon, hakman

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