Make the ansible check diff run serial instead of parallel.
define buildsys macros

for some reason buildsys-macros is not installed in default buildroot
it works localy, but not in Copr. I spent a lot of time debuging it
But enough is enough. Lets solve it this way.
Mailman: the DB server is different in stg and prod
Install psycopg2 on the DB servers
Use the new variable substitution syntax
Mailman: sudo requires a tty