Fix unit test that is breaking CI

[woodsp-ibm]

Summary

CI has been failing nightly builds for a while. The error is

File "/Users/runner/work/qiskit-machine-learning/qiskit-machine-learning/test/neural_networks/test_circuit_qnn.py", line 27, in <module>
    from qiskit.compiler.transpiler import PassManagerConfig, level_1_pass_manager, level_2_pass_manager
ImportError: cannot import name 'PassManagerConfig' from 'qiskit.compiler.transpiler' 

The transpiler.py file changed in the last release of Qiskit and no longer imports the above. The test should not have been importing them via compiler.transpiler.py (which is what it was doing) rather it should have been importing them the same way that file imported them. This changes the test case to do just that so CI should now run again (tests pass locally for me now)

I did not notice the tutorials here were failing too. I added the same workaround as we had in the other apps which gets the python3 kernel installed.

Details and comments

[coveralls]

Pull Request Test Coverage Report for Build 5859929668

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 92.915%

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Totals
Change from base Build 5331720900:	0.0%
Covered Lines:	2649
Relevant Lines:	2851

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💛 - Coveralls