Updated .gitlab-ci.yml to run EVS self_test. Correct bug in case of failed...

    # check for non bitexact output and store exit code to also always run the SBA pytest

    - if [ $bitexact == 0 ] && [ $non_be_flag == 0 ] ; then echo "Non-bitexact cases without non-BE tag encountered"; selftest_exit_code=$EXIT_CODE_FAIL; fi

    - if [ $bitexact == 0 ] && [ $non_be_flag != 0 ]; then echo "Non-bitexact cases with non-BE tag encountered"; selftest_exit_code=selftest_evs_exit_code; fi

    - if [ $bitexact == 0 ] && [ $non_be_flag != 0 ]; then echo "Non-bitexact cases with non-BE tag encountered"; selftest_exit_code=$selftest_evs_exit_code; fi

    ### run SBA pytest

    - exit_code=0

    - python3 ./scripts/ivas_pytests/self_test_b.py --encref IVAS_cod_ref --decref IVAS_dec_ref --encdut IVAS_cod_test --decdut IVAS_dec_test || exit_code=$?

    - if [ $exit_code -eq 1 ] && [ $non_be_flag == 0 ]; then echo "pytest run had failures and non-BE flag not present"; exit $EXIT_CODE_FAIL; fi

    - zero_errors=$(cat report-junit.xml | grep -c 'errors="0"') || true

    - if [ $exit_code -eq 1 ] && [ $zero_errors == 1 ]; then echo "pytest run had failures, but no errors and non-BE flag present"; exit $EXIT_CODE_NON_BE; fi

    - if [ $exit_code -eq 1 ] && [ $zero_errors == 1 ]; then echo "pytest run had failures, but no errors and non-BE flag present"; exit $selftest_exit_code; fi

    - if [ $exit_code -ne 0 ]; then echo "pytest run had errors"; exit $EXIT_CODE_FAIL; fi;

    # return exit code from selftest if everything went well with the pytest run

    - exit $selftest_exit_code