example-1 tutorial fails with OpenMINDS v5

[gefleury]

The example-1 tutorial runs correctly with openminds 0.4.1 but fails with openminds 0.5.0 or 0.5.1

[ehennestad]

This is related to #80. Some of the metadata types in that example has been updated going from v4.0 to v5.0 and the current example-1 is outdated.