[charts/build-scripts] Feature: Auto Chart Bumps on development branches

[nicholasSUSE]

Summary

The security/infra-cloud team recently contacted me about doing more OOB releases for the rancher-cis-benchmark chart.

There are two problems with this:

• Time: At some point, handling so many OOBs for so many charts would be infeasible.
• The rancher-cis-benchmark chart had several problems in the development (versioning, folder structure, manual changes on it instead of the upstream chart).

Solution

To resolve the two problems and achieve the goal of a higher number of OOBs for rancher-cis-benchmark:

Implement Feature: Automatic Chart Bumps on charts-build-scripts:

• Execute the same process as the manual chart bump.
• Automate the version calculation for the following chart bump according to the versioning rules and the upstream target version to release.
• Externally triggered to pull the new chart from the upstream repository.