Use with a custom inventory plugin

##### SUMMARY

We would like to use this with k8s inventory plugin and with a custom k8s inventory plugin (kubectl connection). I'm not sure if it will work out of the box. If not, any pointer to how to make it work would be appreciated.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME

inventory, connection
##### ADDITIONAL INFORMATION

In operator SDK and Kubernetes environment

N/A

Start by reading the inventory and connection plugin entry points related to Kubernetes and the kubectl connection. Check whether the existing interfaces support a custom Kubernetes inventory plugin in an Operator SDK environment; done means establishing support or documenting the required integration path.

Written by the indexing model from the issue text.