Cleanup of Test Network service

This follow-up change performs some cleanup changes without affecting
functionality

Bug: 72950854
Test: Compiles, CTS tests using this pass
Change-Id: Ic7394f24f11d713c9374b438182e29d2a02ea236
Merged-In: Ic7394f24f11d713c9374b438182e29d2a02ea236
(cherry picked from commit 7df36ed96a807f258aef43e558ef127b27b90756)
4 files changed