Allow the spark based test to use different spark contexts

[piotrszul]

Make is somehow possible to group tests based on the spark context then need. Currently only one context is possible for all tests, while three different context are needed

• a basic local context (for most of the tests)
• a hail configured local contex (for hail test)
• a mulithreaded local context for ReproducibilyTest

[piotrszul]

Here is a good resource on how to do it with maven:

https://www.baeldung.com/maven-integration-test

[rocreguant]

It is implemented