Update build version and iteration for Graylog 1.2.0-rc.2
Update build version and iteration for Graylog 1.2.0-rc.2

hepin1989/omnibus-graylog2,hepin1989/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,Graylog2/omnibus-graylog2,radykal-com/omnibus-graylog2,Graylog2/omnibus-graylog2,hepin1989/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,hepin1989/omnibus-graylog2,radykal-com/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2,radykal-com/omnibus-graylog2,Graylog2/omnibus-graylog2,radykal-com/omnibus-graylog2,Graylog2/omnibus-graylog2,MichaelHoltTech/omnibus-graylog2