fix a bug by david: In demo, quick filter by IDC Name() cannot be used

[ghjan]

fix a bug by david: In demo, quick filter by IDC Name() cannot be used

Description:
when I use demo, I found that quick list_quick_filter in HostAdmin can not work properly.
When you select IDC Name, no result is return because the filter do not work.
Root_cause:
the following sql is not correct:
WHERE "app_idc"."name" IN (idc1)

Solution:
So I modify xadmins/filter.py

        # fix a bug by david: In demo, quick filter by IDC Name() cannot be used.
        if queryset and lookup_params:
            new_lookup_parames = dict()
            for k, v in lookup_params.iteritems():
                list_v = v.split(',')
                if len(list_v) > 0:
                    new_lookup_parames.update({k: list_v})
                else:
                    new_lookup_parames.update({k: v})
            queryset = queryset.filter(**new_lookup_parames)