Fix some problems with connected resources

[michael-richey]

What does this PR do?

Resolves several problems with connected resources.

Description of the Change

At some point in the past connect_id was an abstract method on the base class, but it hasn't been abstract for a while, there's a default implementation now. Using pass skips over that default implementation when some classes might require it. We removed these methods that just skip the base method from several models.

The new synthetics mobile application classes and connecting resources were affected, but didn't have tests so we've added tests. These tests upload a binary file (an android apk file), since we record the tests we need to deal with recording that binary data so some changes to conftest.py

The tests revealed a hidden dependency. Some synthetics tests depend on mobile applications. Mobile application versions also depend on mobile applications. Those are both easy relationships to deal with because there's an id we use for association like every other resource (think of the id as a foreign key). However, to successfully create a link from a test to a mobile application that mobile application needs to have a version associated with it. So we add all versions of the specific app as test dependencies. These changes are in resources_handler.py

The mobile application model also had some extra fields that we cannot pass to the API and a circular dependency defined that was removed.

Finally, we generated cassettes. However, some of the mobile application tests generated cassettes that were too large for github, so the tests are skipped. Github actions won't run them but can be run locally if needed.