https opt-in (http for local dev should work)

[kphunter]

According to https://app.devin.ai/review/bcit-tlu/haproxy-operator/pull/1#analysis-ANALYSIS_pr-review-job-1efd75dd45fa43b8b4237210418e84fc_0005, a different opt-in mechanism should be explored rather than silently downgrading local/dev https connections.