helm-charts deploy script only safe in dedicated namespace

[timroster]

There are assumptions in the logic for helm-charts/deploy_charts.sh that will cause problems if run in a namespace that contains other running pods or helm charts.

1. The script lists and removes any existing helm charts in the namespace including others which may not have been deployed by the script
2. Deployment completion checks depend on specific numbers of running and completed pods before moving to subsequent steps.