Reduce cache request timeout to 10 sec for only-if-cached scenario

* We need a 60s timeout for the scenario where we want the cache
  to query the backend to satisfy the request.

* A much smaller timeout is sufficient when we are going to only
  query the cache (but not the backend).

Change-Id: Id7803bf1b3ca83e91f060ae8689ec04555a2b20c
Merge "Reduce cache request timeout to 10 sec for only-if-cached scenario"