Increase the testenv-worker timeout

I underestimated how long the jenkins timeout would need to be.

Change-Id: I3cc504563486da2a0b88865689459bf729bfbfa2
Don't truncate the logged json

This achieves nothing but hiding valuable debug information.

Change-Id: I55cb1ae19c33b974bcbfb294f76c310a32a305e1