frontend/afe/rpc_interface.py: RPC API documentation.

Include API documentation in functions that is missing documentation.

Signed-off-by: Ruda Moura <rmoura@redhat.com>
documentation: Build AFE RPC interface in documentation.

Build AFE RPC interface in documentation. Include reference to full API.

Signed-off-by: Ruda Moura <rmoura@redhat.com>
frontend/afe/rpc_interface.py: move "optional" qualifiers to param description

Sphinx doesn't understand qualifiers added to the param name, after the colon.
So, move it to the description text instead.

Signed-off-by: Cleber Rosa <crosa@redhat.com>