Comments break drone templates

If you place a comment at the top when loading a template, ie

# this is a comment
kind: template
load: application.yaml

this fails to match the regex used to check for kind: template and fails to load anything. The step is stuck at “default” and pending forever with no errors logged anywhere. This is similar to the “—” breaking template loading issue that was previously resolved here.

Hey @mgendron

Cool, we will raise a bug and take a look when we can.