bugzilla2fedmsg: install python2-docutils
    
    It turns out that python2-docutils is needed to make this function.
    Without it, it tracebacks on start and never processes normally.
    Probibly the rpm should have a hard dep on this, but in the mean time we
    add it here to make sure it's installed.
    
    Signed-off-by: Kevin Fenzi <kevin@scrye.com>