api/service: changed TearDownTest to delete apps using Destroy
api/service: changed TearDownTest to delete apps using Destroy

The Destroy method removes the .git directory.

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