CLOUDSTACK-7579 Adding a method to base.py to update storage pool

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
In case of Hyper-v ssvm/cpvm reboot takes time so made changes to handle this
CLOUDSTACK-7595: Config parameters "job.expire.minutes" and "job.cancel.threshold.minutes" incorrectly getting multiplied by a factor of 60
Removed the unnecessary multiply factor for both the config parameters. Also removed the duplicate entries from Config.java as these are not required