switch from sqlite to postgresql

[ThomasWaldmann]

postgres.int :: /etc/postgres/.../pg_hba.conf is ansible managed

... so i need to update ansible files to not lose my changes (nsupdate_info db host rule).

[ThomasWaldmann]

https://gist.github.com/sirodoht/f598d14e9644e2d3909629a41e3522ad maybe helpful.

[ThomasWaldmann]

https://django-extensions.readthedocs.io/en/latest/dumpscript.html

[ThomasWaldmann]

Creating a fake django_session table to make dumpdata happy:

create table django_session(session_key, session_data, expire_date);