Summary:
This diff enables node_agent RPCs by default, replacing ansible flows for configuring the node.
The benchmarking comparison between two can be found here - https://docs.google.com/document/d/1WN-FkPI2-oYEJ_JUfsXJtUD6y66pHYxoLDsm3V7aSKo/edit?tab=t.0

Test Plan: iTest pipeline

Reviewers: anijhawan, nbhatia, nsingh

Reviewed By: nsingh

Differential Revision: https://phorge.dev.yugabyte.com/D44508