Turn it into an instance method from a plain function

We'll need access to $self to get info from the app's configuration
Prepare to remove host and port from DB by reporting their values from the configuration
Get host and port from somewhere other than database entities

preparing to drop the host and port columns from live database entities,
so places that still need a database host and port need to get it from
somewhere else.
remove host and port from live database entities
Merge branch 'master' into remove-host-from-db

Conflicts:
	lib/TestDbServer/Command/CreateDatabase.pm
	t/commands.t
Add DB migration files to drop host and port columns

should have been part of 88ff7c5
Merge pull request #35 from brummett/remove-host-from-db

Remove host from db