Kubelet configuration customization Docker cp and wn

[mitalipaygude]

Issue #, if available:

Description of changes:
This PR adds a new field KubeletConfiguration in the eksa spec for control plane and worker node configuration. This is an unstructured object that is of the kind value KubeletConfiguration. This PR adds the code for Docker provider.

Testing (if applicable):

• unit tests
• e2e tests

Documentation added/planned (if applicable):

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Attention: Patch coverage is 77.77778% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 73.41%. Comparing base (cd34399) to head (e8cdf7d).
Report is 7 commits behind head on main.

Files	Patch %	Lines
pkg/api/v1alpha1/cluster.go	83.33%	2 Missing and 2 partials ⚠️
pkg/providers/docker/docker.go	66.66%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8187      +/-   ##
==========================================
+ Coverage   73.40%   73.41%   +0.01%     
==========================================
  Files         577      577              
  Lines       35900    35936      +36     
==========================================
+ Hits        26352    26383      +31     
- Misses       7882     7884       +2     
- Partials     1666     1669       +3     

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[mitalipaygude]

/test eks-anywhere-e2e-presubmit

[abhinavmpandey08]

/approve
/lgtm
/woof

[eks-distro-bot]

@abhinavmpandey08:

In response to this:

/approve
/lgtm
/woof

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[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhinavmpandey08

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