Refactor functional and integration tests to use new test utils

[timkimadobe]

Task description

The existing functional and integration tests should be refactored to use the newly available common test utilities available in: https://github.com/adobe/aepsdk-testutils-android

With the following items covered:

1. Any changes required to the common test utils should be opened as a PR to the test utils repo, optimally in a non-breaking change manner (although before the 1.0.0 release of the test utils, larger changes should be ok)
2. Manual dictionary/array property assertions should be refactored to use the JSON comparison tool
3. Test utilities that exist in the test utils repo should be used over equivalent test util classes defined locally

Additional implementation details or code snippet(s)

No response