Echo service start failures.

* functions: Previously screen_it would log service start failures by
touching a file, this isn't very useful when working with Jenkins.
Switch to echo'ing that a service failed to start and pipe that through
tee so that we can keep the old behavior of touching a file (note this
behavior is slightly modified and the touched file will now have
contents).

Change-Id: I2d3f272b9a65a9d64dbbc01373a02fccf52f56a8
Merge "Echo service start failures."