BUGFIX: is catalogType is define, it should be used in the URL

```python
    catalogType = gConfig.getValue( catalogPath+'/CatalogType', catalogName )
    catalogURL = gConfig.getValue( catalogPath+'/CatalogURL',
"DataManagement/"+catalogName )


should rather be:

```python
    catalogType = gConfig.getValue( catalogPath+'/CatalogType', catalogName )
    catalogURL = gConfig.getValue( catalogPath+'/CatalogURL',
"DataManagement/"+catalogType )

CTA has:

CatalogName = DIRACFileCatalog
CatalogType = FileCatalog

and CatalogURL, that was not defined in the configuration, results
DataMamagement/DIRACFileCatalog. What it should be is:
DataManagement/FileCatalog