broker: limit FDs to 64 by default
broker: limit FDs to 64 by default

Limit the maximum FD quota per user to 64 by default. Using 1024 is just
far off and hits RLIMIT_NOFILE easily in tests.

Signed-off-by: David Herrmann <fb53b2ddb8d141e0cb39d7c67c2f81b6bc2eb0f7@gmail.com>

bus1/dbus-broker