Summary:
TSIA, the clients from the etcd and NATS repos are too old and
incompatible with our k8s api package. So generate clients instead.
We can then use these to modify the etcd/NATS resources.

Test Plan:
Added some manual fetching and logging of etcdcluster and natscluster
resources in the operator using the generated clients.

Reviewers: michelle, philkuz

Reviewed By: michelle

Differential Revision: https://phab.corp.pixielabs.ai/D9733

GitOrigin-RevId: 4e9bad8b86e0c7464e8f0ae711018ef7ac193834