Added networking-arista project
Added networking-arista project

trown/rdoinfo,eggmaster/rdoinfo,redhat-openstack/rdoinfo,hguemar/rdoinfo-Kilo,xbezdick/rdoinfo,apevec/rdoinfo-Kilo,javierpena/rdoinfo-Kilo,hguemar/rdoinfo,javierpena/rdoinfo,derekhiggins/rdoinfo