CLOUDSTACK-5408 [Automation] Failed to deploy vm in vmware environment with error "due to java.io.IOException: Cannot run program "mount": java.io.IOException: error=12, Cannot allocate memory"

Bump up RAM size of system offering for SSVM to 512MB

Signed-off-by: Sateesh Chodapuneedi <sateesh@apache.org>
remove vhd-util from d935d3865aa2a4fb39709f6943f02f9f5a422aff
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cloudstack