Updated helm.yaml pipeline to perform checks on MR
General MR
Summary
Creating a pipeline for gluon that triggers on merge request to ensure breaking changes don't make it into the main branch.
Used the branch called pipeline for gluon which now has a basic helm chart in there to allow for the library chart to be tested properly.
Relevant logs/screenshots
https://repo1.dso.mil/big-bang/pipeline-templates/package-validation/-/pipelines/3157558
Linked Issue
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