Turned out that linaro-london network pipe is too thin
to support this job. Pushing images took 3 hours so job
timed out.
Will check it once new nodes arrive.
This reverts commit f2801fabdd727fc72a28b056d79787af484424a7.
Change-Id: I8897ede43f11090902fe7c0c096f17f57c1c9c67