Build #4216 (May 31, 2024 5:33:24 PM)

1. Update helm and kubernetes version in installer to 3.15.1 and 1.30.1 (detail)
2. Update helm and kubectl versions in LCM and tests Dockerfile (detail)
3. Remove helm2 client from LCM Dockerfile (detail)

Started by upstream project devops-stage_1 build number 5564
originally caused by:

• Triggered by Gerrit: https://osm.etsi.org/gerrit/14402

• master