Preparatory patches for bumping fcct -> butane#2980

Merged

openshift-merge-robot merged 5 commits intoopenshift:masterfrom

cgwalters:bump-butane-prep

Mar 8, 2022

Commits on Mar 1, 2022

controller: Add unit test for built-in templating
cgwalters
committed

Commits on Mar 2, 2022

Move helper to read Ignition file contents into controller/common
cgwalters
committed
controller: Convert all things reading files from Ignition to use helper
cgwalters
committed

Commits on Mar 3, 2022