Register entry points of Custodia plugins
With setuptools in place FreeIPA is able to register its Custodia
plugins. Custodia 0.1 ignores the plugins directives. Custodia 0.2 uses
the entry points to discover plugins.
https://fedorahosted.org/freeipa/ticket/6492
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Martin Babinsky <mbabinsk@redhat.com>