ensure that postgresql is started first
ensure that postgresql is started first

sysvinit copes with the current file but
make the dependency explicit for other init
systems.

Change-Id: Icca66816ccd346a2675d1a61973de8b6af4404e0

Linaro/lava-server,Linaro/lava-server,Linaro/lava-server,Linaro/lava-server