fixed a typo
Disable IAM feature from 4.4 release.
CLOUDSTACK-6742: listVolumes - As regularuser , able to list Vms and
volumes of other users.
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.
Fix AccountManager unit testcase.