Fix bug in asio resolver

This regressed when the bypass was added.  Fix the code for
resolver=asio to properly construct the results object using the built
in asio type instead of std::vector.

Tested: Code compiles with resolver=asio again.

Change-Id: I3d9ddc38b88a392cf82fc81bd5609f3360837393
Signed-off-by: Ed Tanous <etanous@nvidia.com>