- added optional traversal_spec parameter to both methods, allowing the
user to specify a different TraversalSpec object to search for content
(if not specified, the behaviour is that all a traverse all search is
done)
- the traversal_spec is destroyed only if is created in the method
- added local_properties flag to both methods allowing the retrieval of
properties of the container object
- added tests for the 2 functions
- added support for passthrough connections via SSPI
- added function to specify if a connection is made to a vCenter or ESXi host
- added function to disconnect from a vCenter or ESXi host
- added tests for changed/new functions