kubernetes adapter fixes and improvements #1
kubernetes adapter fixes and improvements #1

- Switch to use a lower-level RESTClient
- Bugfix in bookkeeping of the podServices data structure
- Index pods by their names rather than by UIDs
- Fetch cached pods/endpoints by key rather than by linear search
- Comments fix

ericvn/amalgam8,craigyam/amalgam8,JacobFrericks/amalgam8,craigyam/amalgam8,kimikowang/istio_vms,JacobFrericks/amalgam8,amalgam8/amalgam8,ericvn/amalgam8,JacobFrericks/amalgam8,kimikowang/istio_vms,amalgam8/amalgam8,kimikowang/istio_vms,kimikowang/istio_vms,craigyam/amalgam8,amalgam8/amalgam8,kimikowang/istio_vms,craigyam/amalgam8,amalgam8/amalgam8,ericvn/amalgam8,craigyam/amalgam8,amalgam8/amalgam8