Changes

pySim-shell-test: improve global platform tests

The tests that check the establishment of a secure channel currently only test
security level 3. Also the get_data command after it only tests data reception
from the card.

Let's extend the test coverage and test the SCP establishment for security
level 1 as well. Let's also add a get_status command to make sure sending data
to the card also works (without exceptions).

Related: OS#6367
Change-Id: Idff40b414a249e532df1bdce2a8deb9b0cb9718f