Guillaume Roguez authored Mar 02, 2015 and Eloi Bail committed Mar 02, 2015

* Add timeout parameter to hasValidIGD to let caller decide
  if he want to block or not and how long.
* Change callers to support this timout.
* replace extra search mutex/cv by exiting validIGD mutex and add
a validIGD cv.

Refs #67319

Change-Id: If743aa6df9aa21c0a542d489615c9b032e2b5fa7