update server hostname to new aus.stglabs.ibm.com
update server hostname to new aus.stglabs.ibm.com

Change-Id: Ie10d773c6ea4ac5b28871521b5942b3b286efad8
RTC: 87722
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/6535
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

open-power/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,alvintpwang/hostboot,csmart/hostboot,open-power/hostboot,csmart/hostboot,alvintpwang/hostboot,csmart/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,alvintpwang/hostboot,csmart/hostboot,csmart/hostboot