Allow socket events for falco.
Allow socket events for falco.

Re-enable socket events for falco, so information about socket file
descriptors can be properly filled in.

This fixes https://github.com/draios/falco/issues/67, which has more
details on the problem.

angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig,angeloc/sysdig