Remove a lot of boilerplate code by defining reusable functions.
Also, test the Run() method instead of the functions callees of Run() as
it is the top level functionality that was tested in practice (we don't
have separate unit tests for the callee functions).
NodeResourceTopology(aka NRT) custom resource is used to enable NUMA aware Scheduling in Kubernetes.
As of now node-feature-discovery daemons are used to advertise those
resources but there is no service responsible for removing obsolete
objects(without corresponding Kubernetes node).
This patch adds new daemon called nfd-topology-gc which removes old
NRTs.
Signed-off-by: PiotrProkop <pprokop@nvidia.com>
