provision/docker: use the new function for parsing JSON streams
provision/docker: use the new function for parsing JSON streams

hcxiong/tsuru,gciotta/tsuru,gwmoura/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,firebitsbr/tsuru,tuxmonteiro/tsuru,ggarnier/tsuru,guilhermebr/tsuru,cgvarela/tsuru,hcxiong/tsuru,cgvarela/tsuru,ggarnier/tsuru,kgrvamsi/tsuru,gciotta/tsuru,cezarsa/tsuru,ArxdSilva/tsuru,kgrvamsi/tsuru,4eek/tsuru,cezarsa/tsuru,gwmoura/tsuru,tuxmonteiro/tsuru,ArxdSilva/tsuru,tsuru/tsuru,Endika/tsuru,4eek/tsuru,ArxdSilva/tsuru,Endika/tsuru,gciotta/tsuru,guilhermebr/tsuru,tsuru/tsuru,tuxmonteiro/tsuru,cgvarela/tsuru,4eek/tsuru,kgrvamsi/tsuru,tsuru/tsuru,firebitsbr/tsuru,cezarsa/tsuru,hcxiong/tsuru,tsuru/tsuru,cezarsa/tsuru,ggarnier/tsuru,gwmoura/tsuru,Endika/tsuru,ggarnier/tsuru,firebitsbr/tsuru,guilhermebr/tsuru