Add check for CHANGELOG and chart version bumps on package pipelines
All too often a developer forgets to bump the chart version or add an entry into the CHANGELOG. As a pre pipeline step, check that the chart version does not equal the target branch chart version and that the CHANGLOG has an entry for the chart version. This would save an additional "back and forth" between codeowner and developer on MRs when these items are forgotten.
There are some cases where a changelog and chart version bump are not needed (e.g. CODEOWNER update). So, there also needs to be a way to bypass this check for documentation or administrative type merges. In Big bang, a prefix on the MR title is used (e.g. docs will skip the pipeline, SKIP UPGRADE will skip that stage).