veyron/services/mgmt/node/impl: fixing the node manager test failure
related to mount table entries caching

This CL makes sure that the node manager test flushes cache entries 
for names before it tries to resolve these names. This is necessary 
because as of https://veyron-review.googlesource.com/#/c/3709 veyron 
caches resolved entries.

Change-Id: I80e34b9f11e93e2614517c9ea128d29e466282a9
3 files changed
tree: f908f1e0f935ca386d13846f85ff4b8c5a7ac85e
  1. examples/
  2. lib/
  3. products/
  4. runtimes/
  5. security/
  6. services/
  7. tools/