Removed copyright from empty files

According to policy change in HACKING:
http://docs.openstack.org/developer/hacking/#openstack-licensing
empty files should no longer contain copyright notices.
Please note, Oslo (nova/openstack/common) not changed!

Closes-bug: #1262424
Change-Id: I26b7d1eabb189f06219b70495d229389b9d3f260
VMware: create utility functions

The following method has been moved to utility functions:
 - _get_values_from_object_properties

This is now in the vm_util module and is called:
 - get_values_from_object_properties

In addtion to this _get_diagnostic_from_object_properties
has been dropped and the code using that method now leverages
get_values_from_object_properties.

This is related to the blueprint vmware-spawn-refactor.

Change-Id: I5033cae8838179b4c1ace327a42dc626493f19e8
Merge "Removed copyright from empty files"
Merge "VMware: create utility functions"