CLOUDSTACK-3950: the issue can be reproduced by: copy iso failed during the first time, for some reason, then copy the same iso again, the issue be triggered.
CLOUDSTACK-3731: [GSLB] deleteGlobalLoadBalancerRule fails with the
java.lang.NumberFormatException

While deleting LB monitor and GSLB service binding Nitro API fails
with wierd NumberFormatException. Adding a workaround to delete the LB
monitor after GSLB service is delted (which ensures intenrally LB
monitor is delted).
CLOUDSTACK-3987: Setting extract.url.expiration.interval is not honored
for S3 generated url, which is hard-coded to 1 hour.
Fix problems found in local test when JVM assertion is turned on