[v2] Further Tests

[brokkoli71]

We need to test the following functionalities to ensure they work as expected:

• Reading from and writing to S3 storage (fixed in Zip Store #37)
• Writing data in parallel with thread safety
• Data types bool, float (fixed in V2 groups #25)
• Array.resize and Array.updateAttributes (also for v3)

[brokkoli71]

tests for Data types bool, float were added in #25