Add global catalog per component

            'properties': {
                'serviceTag':  {'label': 'Service Tag',
                                'index_type': 'field',
                                'index_scope': 'global'},
                 }
            }

scopes allowed:   global, device, both

global means this property will only be indexed to a catalog in dmd.Devices named
ZenPacks_zenoss_ExampleZenPack_ExampleComponentSearch

device will just create a catalog on a device named ExampleComponentSearch

Both will create both catalogs.


This feature also handles removing these extra catalogs upon zenpack removal.