switch to default-DCO instead of actioned

[grokspawn]

Description of the change:
contributes to #1199

Motivation for the change:

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /docs
• Commit messages sensible and descriptive

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (010e308) 53.80% compared to head (5e70e5d) 53.80%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1217   +/-   ##
=======================================
  Coverage   53.80%   53.80%           
=======================================
  Files         108      108           
  Lines       10368    10368           
=======================================
  Hits         5578     5578           
  Misses       3808     3808           
  Partials      982      982           

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: everettraven, grokspawn

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[everettraven]

/lgtm