Update 30 Single storage VMs.ps1

Speeding things up.
Switching to layoutex container in order to avoid reporting VM with only their swap on ESX local unshared storage (but vmx/vmdk on shared ones)
Merge pull request #32 from vmdude/patch-15

Update 30 Single storage VMs.ps1
Merge https://github.com/alanrenouf/vCheck-vSphere