Restore CLI entry point and version in setup.cfg
Restore CLI entry point and version in setup.cfg

During project toxification (commit c96200f) setup.py was modified
according to OpenStack standards and the entry_point and version
info were removed from it.
However, appropriate sections were not added into setup.cfg.
This commit puts them there, so CLI and package versioning works
properly again.

Change-Id: I1e2ed6513b4e4cd8d3dcc774fd456833dc7c79d5

openstack/yaql,stackforge/yaql