Migrating to new dinit service format

[WeirdGumi]

The current format may be deprecated in the future.

Starting from 0.19.0, dinit prefers to specify1

• options
• depends-on
• depends-ms
• waits-for

properties of services with : as deliminator, instead of =, e.g.

options: starts-on-console
options = starts-on-console # deprecated! 

We should migrate to the new format to avoid future breakage.