BIS-769: Fixed xls test files

...esources/export-data-set-type-compatible-with-import.xlsx

...-set-type-filtered-attributes-compatible-with-import.xlsx

...t/resources/export-data-set-type-filtered-attributes.xlsx

...ric/server/xls/export/resources/export-data-set-type.xlsx

...ources/export-experiment-type-compatible-with-import.xlsx

...ment-type-filtered-attributes-compatible-with-import.xlsx

...resources/export-experiment-type-filtered-attributes.xlsx

...c/server/xls/export/resources/export-experiment-type.xlsx

.../resources/export-sample-type-compatible-with-import.xlsx

...mple-type-filtered-attributes-compatible-with-import.xlsx

...ort/resources/export-sample-type-filtered-attributes.xlsx

...sources/export-sample-type-with-bare-sample-property.xlsx

...es/export-sample-type-with-chained-sample-properties.xlsx

...ces/export-sample-type-with-cyclic-sample-properties.xlsx

...rces/export-sample-type-with-omitted-sample-property.xlsx

...h-omitted-vocabulary-property-compatible-with-import.xlsx

.../export-sample-type-with-omitted-vocabulary-property.xlsx

...rt/resources/export-sample-type-with-sample-property.xlsx

...type-with-vocabulary-property-compatible-with-import.xlsx

...neric/server/xls/export/resources/export-sample-type.xlsx