Automated cherry pick of #79

[roycaihw]

Cherry pick of #79 on release-9.0-base64-patch.

#79: Fix base64 padding for kube config

[codecov-io]

Codecov Report

Merging #146 into release-9.0-base64-patch will increase coverage by 0.02%.
The diff coverage is 86.95%.

@@                     Coverage Diff                      @@
##           release-9.0-base64-patch     #146      +/-   ##
============================================================
+ Coverage                     92.11%   92.13%   +0.02%     
============================================================
  Files                            13       13              
  Lines                          1217     1234      +17     
============================================================
+ Hits                           1121     1137      +16     
- Misses                           96       97       +1

Impacted Files	Coverage Δ
config/kube_config_test.py	94.55% <100%> (+0.13%)	⬆️
config/kube_config.py	83.9% <66.66%> (+0.04%)	⬆️

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[yliaog]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: roycaihw, yliaog

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