delay zapperized insertion/removal for 5s

Previously the command to connect or disconnect the USB device was sent almost at the same time that removable_watcher started waiting for that change to take place. This meant that there was a big chance for that action to happen _before_ the test could observe the change. This patch introduces a delay (with a background thread) that calls Zapper after 5 seconds from starting the observation. The whole test is programmed to wait for 20s, so the delay doesn't change the duration of the test. It's also not some fixing-race-conditions-with-random-sleeps kind of fix. 

0 files changed, 0 insertions, 0 deletions