Add CLI test for activation-key copy

Adresses #1704

Test results
------------
@Test: Copy Activation key for all valid Activation Key name ... ok
@Test: Copy Activation key for all valid Activation Key name ... ok
@Test: Copy Activation key for all valid Activation Key name ... ok
@Test: Copy Activation key for all valid Activation Key name ... ok
@Test: Copy Activation key for all valid Activation Key name ... ok
@Test: Copy Activation key for all valid Activation Key name ... ok

Proposed
-------------
Add cProfile-related items to .gitignore
Could you reformat this, please?

    result = ActivationKey.copy({
        ...
    })