Prepare release v2.0.0-alpha4.
Prepare release v2.0.0-alpha4.


dtomcej/traefik,ldez/traefik,vdemeester/traefik,containous/traefik,SantoDE/traefik,FriggaHel/traefik,mmatur/traefik,FriggaHel/traefik,FriggaHel/traefik,dtomcej/traefik,SantoDE/traefik,vdemeester/traefik,mmatur/traefik,containous/traefik,vdemeester/traefik,SantoDE/traefik,FriggaHel/traefik,containous/traefik,SantoDE/traefik,ldez/traefik,mmatur/traefik,vdemeester/traefik,containous/traefik,dtomcej/traefik,ldez/traefik,mmatur/traefik,dtomcej/traefik,ldez/traefik