add service_specific_id to TenantRoot, rename attribute to service_specific_attribute, add get_newest_subscribed_tenant method
add service_specific_id to TenantRoot, rename attribute to service_specific_attribute, add get_newest_subscribed_tenant method

cboling/xos,xmaruto/mcord,xmaruto/mcord,cboling/xos,cboling/xos,xmaruto/mcord,jermowery/xos,xmaruto/mcord,cboling/xos,jermowery/xos,jermowery/xos,jermowery/xos,cboling/xos