Add methods to return property variant

Create methods to return a property variant for use where the overloaded
comparison operations are needed against a property value stored as a
variant.

Tested:
    A property is looked up and returned as the given variant type

Change-Id: Iab557781a3ab9e33d3595ad69db5544a25efe2eb
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
1 file changed