Resolve "Remove usage of dockerfile dependency in pipeline"

Merge Request Description

Update lint to use hadolint instead of the dockerfile module

Merge Request BOE

Risk

Medium -- this MR could cause issues in the lint stage of the pipeline that could cause unexpected pipeline failures

Rollback Plan

1. Create hotfix to allow any type of failure on dockerfile validation
2. If that fails, rollback MR

Testing

• UBI8
• hadolint findings are logged correctly
• "Final FROM" message on invalid final from
• correct message on no dockerfile issues
• hard failure on unparseable Dockerfile
• test with v0.9.3 image

Closes #731 (closed)