This will allow it be set dynamically. Ref: #10818
- file://host.name/path/file.txt is a valid UNC path \\host.name\path\files.txt to a non-local file transformed into URI (RFC 8089 Appendix E.3) - UNC paths on other OSs must be smb: URLs Closes #7366
This makes the tests easier to copy and relocate to other test numbers without having to update content. Closes #6738
