new tests for ODS, RDF, and WMTS

formats/gml_format.py

formats/ods_format.py

formats/pdf_format.py

formats/png_format.py

formats/rdf_format.py

formats/shp_format.py

formats/wfs_srvc_format.py

formats/wms_srvc_format.py

formats/wmts_srvc_format.py

formats/zip_format.py

tests/data/WMTSCapabilities.xml

tests/data/rdf.json

tests/data/rdf.xml

tests/data/valid.docx

tests/data/valid.ods

tests/data/valid.odt

tests/data/valid.xlsx

tests/test_all_formats.py

tests/test_format_fidelity_checker.py

tests/test_gml_format.py