veyron/lib/testutil: Eliminate dependence on rt.R().

Note, this temporarily introduces more uses of rt.R(), but only in files
where it already occurs.  I will clense those files later.
The nature of this change is that it's most easily done from the leaves
of the call graph back toward the roots.

Change-Id: I850f12bf8fb76d179731bfa4ae275053a473ba70
6 files changed
tree: 327a0a4f94eda798b235b1614fb06e2148b2277a
  1. lib/
  2. profiles/
  3. runtimes/
  4. security/
  5. services/
  6. tools/