kind-voltha voltha start application problems when using different yaml config files

Maybe introduced with kind-voltha version 5.0.x?

We want to use different config yaml files for kind-voltha in order to decide to start with different onuadapter implementations without the need to intensively modify the yaml file.

Now it seems that in case we use a yaml file different from minimal-values.yaml by specifying EXTRA_HELM_FLAGS='-f ./dev-values.yaml' then the requested changes become valid only partly. Whereas the the dev-values.yaml file requested onuadaptor is really used, the requested number of pon and onu instances given in dev_values.yaml have no effect, instead the values given in minimal_values.yaml are used. (selected by paragraph:

Customization for BBSIM
bbsim:
nni: 1
pon: 1
onu: 1)

In the kind-voltha install log I can only observe (multiple) sequences of the minimal-values.yaml file, even thouhg dev-values.yaml was specified.