Ansible depends on paramiko which depends on cryptography whcih requires
libffi dev headers when installing via pip. Go ahead and add this
dependency via bindep.
The default filename for documenting binary dependencies has been
changed from "other-requirements.txt" to "bindep.txt" with the release
of bindep 2.1.0. While the previous name is still supported, it will
Move the file around to follow this change.
Note that this change is self-testing, the OpenStack CI infrastructure
will use a "bindep.txt" file to setup nodes for testing.
For more information about bindep, see also: