docs/releases/tsr: add quota management to 0.7.0
docs/releases/tsr: add quota management to 0.7.0

Related to #869.

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