Pulp

In pulp 3, the agent will no longer be supported.

Need to remove in code tree:
- /pulp/agent/
- /sever/pulp/server/agent/
- /server/pulp/server/controllers/consumer bind(), unbind() calls to agent manager; *_content() functions.
- /server/pulp/server/managers/agent.py and references in /server/pulp/server/webservices/application.py
- /server/pulp/server/config/py defaults for [messaging] section.
- /server/etc/pulp/server.conf [messaging] section.
- /client-lib/pulp/client/consumer/content.py
- /pulp_consumer/etc/pulp/consumer/consumer.conf [messaging] section
- /pulp_consumer/pulp/client/consumer/config.py references [messaging] in DEFAULTS and SHCEMA
- /pulp_consumer/pulp/client/consumer/cli.py anything to do with key exchange on registration.

Remove in .spec files:
- requires on gofer in .spec files.
- requires on m2crypto (I think).
- get rid of script to generate the message signing RSA keys.

Remove all documentation.

As part of t