integration: add confirmation for gce cluster deletion
integration: add confirmation for gce cluster deletion

cezarsa/tsuru,tsuru/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,tsuru/tsuru,ArxdSilva/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,ggarnier/tsuru,ggarnier/tsuru,guilhermebr/tsuru,ggarnier/tsuru,cezarsa/tsuru,tsuru/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,tsuru/tsuru,cezarsa/tsuru