Restore disabling timeout on image pull

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>
Ensure sorted order on links to make unit test deterministic

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>
Fix under-indented line

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>
Merge pull request #100 from mpetazzoni/pull-timeout

Restore disabling timeout on image pull