Add db8 tempdb upstart script for OpenWebos

:Release Notes:
Fix qemu build

:Detailed Notes:
Add tempdb upstart script for qemu86
Sync qemu maindb upstart script with maindb upstart script from
other builds

:Testing Performed:
Compiled and tested localy.

:QA Notes:

:Issues Addressed:
[GF-61530] Add upstart script for tempdb for qemu86

Open-webOS-DCO-1.0-Signed-off-by: Maksym Sditanov <maxim.sditanov@lge.com>

Change-Id: I1a5d5cb851c7f497aae8ad0e8e5596bd00fcde75
Reviewed-on: https://g2g.palm.com/4816
Reviewed-by: DCO Verification
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>
Reviewed-by: Igor Kuksyuk <igor.kuksiuk@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>