CLOUDSTACK-5485: Use edge-triggering in MessageDetector to handle bogus wakeup gracefully. Level triggering plus bogus wakeup can cause a tight loop to spin
CLOUDSTACK-6742: listVolumes - As regularuser , able to list Vms and
volumes of other users.
bugfix: systemvm template build failed

since newer vboxmanage generates $appliance-$branch-vmware-disk3.vmdk
CLOUDSTACK-6671: Fixing NPE when a mapping is missing
Adding missing KVM mappings

Testing Done:
Local testing with removing CentOS mapping and launch a VM.

Signed-off-by: Nitin Mehta <nitin.mehta@citrix.com>
CLOUDSTACK-6745:DomainAdmin is not able to deploy Vm for users in his
domain/subdomain.
CLOUDSTACK-6752: IAM command class separation caused ApiDoc warning of
duplicated cmd class for the same api name.
Resolve issue with build script for systemvm hanging due to libssl waiting on a input prompt caused by apt-get update