fix: use cordon/drain timeout for pod eviction timeout during upgrade

[zachpuck]

Reason for Change:

When testing changes from PR #938 I found that the WaitForDelete call to delete/evict a pod was still using a 10s timeout. This caused some pods to not evict in time and the upgrade to fail. To quickly address this I have updated the getKubernetesClient to allow the cordonDrainTimeout to be passed in.

Issue Fixed:

Fixes #930

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

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[zachpuck]

/assign @jackfrancis

[jackfrancis]

lgtm pending upgrade tests (in-progress)

[jackfrancis]

/azp run pr-e2e

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Azure Pipelines successfully started running 1 pipeline(s).

[codecov]

Codecov Report

Merging #1157 into master will decrease coverage by <.01%.
The diff coverage is 75%.

@@            Coverage Diff             @@
##           master    #1157      +/-   ##
==========================================
- Coverage   74.91%   74.91%   -0.01%     
==========================================
  Files         131      131              
  Lines       18458    18457       -1     
==========================================
- Hits        13828    13827       -1     
  Misses       3837     3837              
  Partials      793      793

[jackfrancis]

/lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jackfrancis, zachpuck

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