Fixed sanity test issue with raise-missing-from

Signed-off-by: Andreas Maier <maiera@de.ibm.com>

tests/sanity/ignore-2.10.txt

@@ -27,6 +27,7 @@ plugins/modules/zhmc_crypto_attachment.py pylint:raise-missing-from
 plugins/modules/zhmc_hba.py pylint:raise-missing-from
 plugins/modules/zhmc_nic.py pylint:raise-missing-from
 plugins/modules/zhmc_partition.py pylint:raise-missing-from
+tests/end2end/test_zhmc_partition.py pylint:raise-missing-from
 plugins/modules/zhmc_user.py pylint:raise-missing-from
 plugins/modules/zhmc_user_role.py pylint:raise-missing-from
 plugins/modules/zhmc_virtual_function.py pylint:raise-missing-from