Modify Upstart 1.8 job files

:Release Notes:
This fix is modifying the Upstart 1.8 job files.

:Detailed Notes:
Configurator configures db, filecache and activity.
There are two upstart scripts for the roles.
 1. configurator.conf : db, filecache
 2. configurator-async.conf : activity

Therefore, right boot sequence is ...

 db8.conf & filecache.conf
 configurator.conf : configure db8, filecache
 datastore-initialized (upstart signal)
 activitymanager.conf
 activitymanager-ready (upstart signal)
 configurator-aync.conf : configure activity

:Testing Performed:
I tested this commit using upstart 1.8.

:QA Notes:

:Issues Addressed:
[GF-5620] update coreOS upstart scripts for 1.8
[GF-10057] MiniBAT failed: Launch Calendar app and confirm that it launches successfully.

Open-webOS-DCO-1.0-Signed-off-by: Sangwoo Kang <sangwoo82.kang@lge.com>

Change-Id: I40fa46312435864aca6d9e426130f75d10be52c4
Reviewed-on: https://g2g.palm.com/2915
Tested-by: Sangwoo Kang <sangwoo82.kang@lge.com>
Reviewed-by: Ed Chejlava <ed.chejlava@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Wonhong Kwon <wonhong.kwon@lge.com>
Reviewed-by: Sangwoo Kang <sangwoo82.kang@lge.com>
Reviewed-by: Suresh Arumugam <suresh.arumugam@lge.com>
Tested-by: Suresh Arumugam <suresh.arumugam@lge.com>