Enable integration tests on python3 that are already working (#17212)

test/utils/shippable/python3-test-target-blacklist.txt

@@ -1,14 +1,5 @@
-s/ check_mode / /
-s/ environment / /
-s/ includes / /
-s/ no_log / /
 s/ pull / /
+s/ no_log / /
 s/ test_async_conditional / /
 s/ test_binary_modules$/ /
 s/ test_connection / /
-s/ test_handlers / /
-s/ test_hash / /
-s/ test_lookup_paths / /
-s/ test_var_precedence / /
-s/ test_vault / /
-s/ unicode / /