"core/veyron/tools": Test must run under agent

This Part 2 of a series of changes to make go tests self-contained
and in particular run under an agent.
See: https://vanadium-review.googlesource.com/#/c/1931/

Change-Id: I956a15d7612e16d369c5b4882fa413c7c62aed04
8 files changed
tree: df82744449e72f3ee5c56e531b71e428b6906972
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/