provision/docker: remove one more helper function from tests
provision/docker: remove one more helper function from tests

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