GUACAMOLE-251: Merge removal of MAINTANER from Dockerfile.
GUACAMOLE-251: Merge removal of MAINTANER from Dockerfile.

softpymesJeffer/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,necouchman/incubator-guacamole-client,softpymesJeffer/incubator-guacamole-client,lato333/guacamole-client,necouchman/incubator-guacamole-client,lato333/guacamole-client,lato333/guacamole-client,softpymesJeffer/incubator-guacamole-client,necouchman/incubator-guacamole-client,glyptodon/guacamole-client,mike-jumper/incubator-guacamole-client,lato333/guacamole-client,mike-jumper/incubator-guacamole-client,glyptodon/guacamole-client,mike-jumper/incubator-guacamole-client,esmailpour-hosein/incubator-guacamole-client,glyptodon/guacamole-client,jmuehlner/incubator-guacamole-client,mike-jumper/incubator-guacamole-client,glyptodon/guacamole-client,necouchman/incubator-guacamole-client,softpymesJeffer/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,glyptodon/guacamole-client