Improve Release Engineering process / instructions

Building off feedback in comments: https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/1150, refactor/rewrite/reorder/organize RE process steps to be clearer and more succint.

Feedback comment: https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/1150#note_605742

changed milestone to %1.33.0

added kinddocs teamci/pipelines labels

assigned to @razzle

changed iteration to Big Bang Iterations Apr 19, 2022 - May 2, 2022

added statusdoing label

set weight to 3

changed the description

Move Release specific code changes to bottom

changed milestone to %1.34.0

changed iteration to Big Bang Iterations May 3, 2022 - May 16, 2022

added statusreview label and removed statusdoing label

closed

removed statusreview label

added Demo Candidate label

removed Demo Candidate label