docs: added info about clusters in release notes.
docs: added info about clusters in release notes.

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