logilab-database #74171 Add support for SSL connections [validation pending]

For psycopg2, it's not possible to pass the "sslmode" extra argument to the psycopg2.connect function. So SSL connections cannt be achieved when using psycopg2 backend. I've not checked, but I guess this is the same for other backends.

done in1.13.0
load left0.000
closed by#7e9fc3d08dab [psycopg] pass extra_args down to connect()
patch[psycopg] pass extra_args down to connect() [applied]