whitelisted test_decr.py/test_getattr_hooks()

Author: tomasstupka

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_descr.txt

@@ -23,6 +23,7 @@
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_ex5_from_c3_switch
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_file_fault
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_funny_new
+*graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_getattr_hooks
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_hash_inheritance
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_imul_bug
 *graalpython.lib-python.3.test.test_descr.ClassPropertiesAndMethods.test_init