cleanup install_dir
cleanup install_dir

MichaelHoltTech/omnibus-graylog2,radykal-com/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,radykal-com/omnibus-graylog2,Graylog2/omnibus-graylog2,radykal-com/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,Graylog2/omnibus-graylog2,radykal-com/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,Graylog2/omnibus-graylog2,Graylog2/omnibus-graylog2