Improve test run time

[thalurur]

Is your feature request related to a problem? Please describe.
At the moment running the tests of IndexManagement takes a long time. Need to bring this time down to make the code development process easier

Describe the solution you'd like
Make the different test suites run as different github actions so PRs don't need to wait around 20-30 min to see if the tests succeed. We can parallelize the actions at the current highest feature level.

• ISM
• Rollups
• Transforms

Test cleanup - any test that can be an unit test should be one, go through existing tests and move any integration tests that can be just unit tests

[dbbaughe]

So the majority of the long test times comes from the fact that under the hood we are using the testing framework from core that uses the randomization runner which means we can't parallelize our tests (even though the majority if not all could be parallelized).

So as Ravi pointed out we should look into splitting the tests by feature first and then from there we could further split each feature into a subset of tests (such as different REST APIs and other things in ISM).

[dbbaughe]

Current unit tests:

There are some unit tests in the Steps part that are taking 3-7 seconds each test that needs to be checked (although not significant in terms of the 20-30+ minute total time).

[dbbaughe]

Current integ tests:

[dbbaughe]