Network Performance measurement: make worker and controller communicate using k8s API

[VivekThrivikraman-est]

What would you like to be added:
In the current implementation controller and worker communicates with each other using http, it would be better design to have them communicate using k8s API instead, i.e.:

• controller creates a CustomResource like: 'NetworkTestRequest' (with appropriate fields)
• worker watches for it, performs appropriate actions based on that and then updates the Status of that object once it's done with its work

Why is this needed:
Better design.