Makefile: improve error reporting in get-test and get-prod targets
Makefile: improve error reporting in get-test and get-prod targets

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