POC - Update the HNS plugin to read from the CNI state file

[BeegiiK]

Is your feature request related to a problem? Please describe.
The HNS plugin only works with reading from the Kubernetes cache and correlating that information to the HNS service to gather networking information. In the case of operating outside of Kubernetes, we can read the pod name, namespace and its IP address from the CNI state file which is

Describe the solution you'd like
In the case of operating outside of Kubernetes, we can read the pod name, namespace and its IP address from the CNI state file which is defined in a well known location. We can read from this file and update the metric labels accordingly and gather the networking details by running the HNS and vfpctrl commands like we already do

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