upstart: Fix SRC_URI

* fixes 3 WARNINGs shown in each dylan build:
  WARNING: Unable to get checksum for upstart SRC_URI entry fix-initctl-set-env.patch: file could not be found
  WARNING: Unable to get checksum for upstart SRC_URI entry remove-legacy-jobs.patch: file could not be found
  WARNING: Unable to get checksum for upstart SRC_URI entry use-our-cjson.patch: file could not be found
  and do_fetch failure when upstart 1.8 is actually used

[GF-6167] upstart-1.8 fails to fetch with dylan
[GF-6168] CCC: upstart-1.8 fails to fetch with dylan

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I39ed04a8b67fa41457c0652b6fa92dd35df802b4
Reviewed-on: https://g2g.palm.com/2196
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Tested-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Ed Chejlava <ed.chejlava@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>