provision/juju: add lb field to elbInstance
provision/juju: add lb field to elbInstance

This field is the name of the load balancer.

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