Hostname/username are now available in Instance.
Hostname/username are now available in Instance.

Change-Id: I2d27ca263d32212290b0c9c885866ffa52d5cc78

xme1226/sahara,matips/iosr-2015,zhangjunli177/sahara,zhujzhuo/Sahara,keedio/sahara,crobby/sahara,henaras/sahara,ekasitk/sahara,citrix-openstack-build/sahara,crobby/sahara,redhat-openstack/sahara,rnirmal/savanna,matips/iosr-2015,zhujzhuo/Sahara,bigfootproject/sahara,redhat-openstack/sahara,zhangjunli177/sahara,tellesnobrega/sahara,mapr/sahara,egafford/sahara,keedio/sahara,tellesnobrega/storm_plugin,mapr/sahara,esikachev/sahara-backup,bigfootproject/sahara,tellesnobrega/sahara,xme1226/sahara,esikachev/sahara-backup,henaras/sahara,openstack/sahara,esikachev/scenario,citrix-openstack-build/sahara,esikachev/sahara-backup,tellesnobrega/storm_plugin,zhujzhuo/Sahara,redhat-openstack/sahara,henaras/sahara,xme1226/sahara,tellesnobrega/storm_plugin,openstack/sahara,crobby/sahara,egafford/sahara,zhangjunli177/sahara,ekasitk/sahara,mapr/sahara,rnirmal/savanna,bigfootproject/sahara,matips/iosr-2015,esikachev/scenario,ekasitk/sahara,citrix-openstack-build/sahara,esikachev/scenario,keedio/sahara