nodecontainer: add sleep between ping requests
nodecontainer: add sleep between ping requests

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