WIP: testnode on webrunner with software link (!19) · Merge requests · nexedi / slapos

Some fixes for testnode so that it can run inside webrunner (ie. shorter socket and file paths)
Software link hack so that software under tests uses software in test node.
Other bug fixes for test node.
Some old commits from DREAM distributor, probably not needed or already merged

( this MR is mostly here so that we do not loose track of where this code is ... Some fixes are also in erp5.git )

WIP: testnode on webrunner with software link