tests: benchmark: update bundles path to local dir
tests: benchmark: update bundles path to local dir

Now we place the test support files in a local dir, update
the api_test reference to use that path.

Fixes: #645

Signed-off-by: Graham whaley <95f36e5ac6982f4574a5c449c37cf652e934d2b9@intel.com>

containers/virtcontainers,containers/virtcontainers