rbac modifications for permission issues

[bilalcaliskan]

This PR fixes #92 and #51. There are couple of duplicated issues for that problem.

Draino fails when deployed with the manifest.yml in the repository. I have fixed the missing verbs in ClusterRole.

I have also fixed the golangci-lint error while linting the code.

[codecov[bot]]

Codecov Report

Merging #117 (e26ca04) into master (9d39b53) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #117   +/-   ##
=======================================
  Coverage   75.58%   75.58%           
=======================================
  Files           7        7           
  Lines         471      471           
=======================================
  Hits          356      356           
  Misses        101      101           
  Partials       14       14           

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[bilalcaliskan]

Hello @jacobstr , can you review the changes please :)