Add and implement remote_trigger_pull in push.py

Signed-off-by: Jeff Rand <jeff.rand@axialmarket.com>
Add man pages

Signed-off-by: Jeff Rand <jeff.rand@axialmarket.com>
Setup.py manpage stuff

Signed-off-by: Jeff Rand <jeff.rand@axialmarket.com>
Actually change CHANGES.txt

Signed-off-by: Jeff Rand <jeff.rand@axialmarket.com>
Support triggering remote queues using fsq-push