Allow override name of resources

[malvex]

Hi, I was trying to use helm charts as requirement for my chart like this:

dependencies:
  - name: nats
    repository: https://nats-io.github.io/k8s/helm/charts/
    version: 0.4.0
  - name: stan
    repository: https://nats-io.github.io/k8s/helm/charts/
    version: 0.4.0

However because .Release.Name is used as a name for all resources it fails with "resource already exists" error because both nats and stan chart is trying to create resource MY-RELEASE-config and the rest.

This change doesn't break anything and allows to override name of each chart with values.yaml. It is widely used approach.

[wallyqs]

I see, thanks for the PR! LGTM

[palsivertsen]

I suspect this broke all the charts over at https://hub.helm.sh/charts/nats