Enable qfile tests for platforms without network

Currently network is only required to gather the host info for one
test case. That does not justify to disable all other tests, which can
provide useful information on the state when doing a port. Hence
disable that testcase if no network is available.

Change-Id: I202ef49b3e07ae69ec85ee0432ae0a771a90e816
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>