Add common::set_endpoints_by_interface & common::sysctl to os-base role

These recipes are part of the openstack-common cookbook and are managed
completely by optional attributes, so they do not affect the existing behavior.

Change-Id: I67b97dfe0fc467656368c2a52d5f9e3198975c1a
Merge "Add common::set_endpoints_by_interface & common::sysctl to os-base role"