remove use of deprecated groovy configuration
remove use of deprecated groovy configuration

sebi-hgdata/spock,siordache/spock,lokinell/spock,lokinell/spock,paplorinc/spock,lokinell/spock,leonard84/spock,sebi-hgdata/spock,paplorinc/spock,raphw/spock,psideleau/spock,GeeChao/spock,alien11689/spock,siordache/spock,psideleau/spock,siordache/spock,paplorinc/spock,GeeChao/spock,spockframework/spock,sebi-hgdata/spock,alien11689/spock,raphw/spock,alien11689/spock,GeeChao/spock,raphw/spock,psideleau/spock