NMS-7154 fix debian init looking for old java
NMS-7155 change Requires to Wants

Make the OpenNMS startup "want" postgresql if it's there, rather than
requiring it.  Also make sure networking is available before startup.
should be snapshot, no more bleeding
NMS-7155 postgresql is a soft requirement in init, too
add an option for running in the foreground
NMS-5057 raise ulimit a few times in the installer
Merge branch 'features/docker-test' into develop