fix: Unit test fix when DEADLINE_ENABLE_DEVELOPER_OPTIONS is True

[jlangmann-aws]

What was the problem/requirement? (What/Why)

The test_initialize_and_uninitialize_plugin unit test would fail if DEADLINE_ENABLE_DEVELOPER_OPTIONS was set to True:

Error:

E           AssertionError: Expected 'registerCommand' to be called once. Called 2 times.
E           Calls: [call('DeadlineCloudSubmitter', <class 'deadline.maya_submitter.mel_commands.DeadlineCloudSubmitterCmd'>),
E            call('DeadlineCloudJobBundleOutputTests', <class 'deadline.maya_submitter.mel_commands.DeadlineCloudJobBundleOutputTestsCmd'>)].

RegisterCommad is called twice if DEADLINE_ENABLE_DEVELOPER_OPTIONS is set to True: https://github.com/casillas2/deadline-cloud-for-maya/blob/mainline/maya_submitter_plugin/plug-ins/DeadlineCloudForMaya.py#L71

What was the solution? (How)

Set DEADLINE_ENABLE_DEVELOPER_OPTIONS to False when running unit test

What is the impact of this change?

Tests pass when DEADLINE_ENABLE_DEVELOPER_OPTIONS is set to True in shell environment

How was this change tested?

Ran unit tests locally

Did you run the "Job Bundle Output Tests"? If not, why not? If so, paste the test results here.

N/A to change. Tests pass

Was this change documented?

No

Is this a breaking change?

No