In the event some malformed folders/files make its way into the
`charts/` directory meant for subcharts, it is possible one may see an
error message like the below:
```
Error: error unpacking foo in app: Chart.yaml file is missing
```
This error is not very descriptive, as it doesn't reference where on
disk `Chart.yaml` is missing. In the event this happens, this error is
being updated to include that `Chart.yaml` is missing for the `foo`
subchart.
Without this updated error messaging, one would need to look into Helm's
codebase to troubleshoot what exactly is wrong.
Signed-off-by: Taylor Jasko <taylor@taylorjasko.com>
Taylor Jasko