update cluster-autoscaler version to 1.2.2 (#3014)
update cluster-autoscaler version to 1.2.2 (#3014)


rjtsdl/acs-engine,Azure/acs-engine,Azure/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,jackfrancis/acs-engine,rjtsdl/acs-engine,Azure/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,rjtsdl/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,Azure/acs-engine