test: fix `make test-addons` target
I broke the python script in commit edaf7af3 but because test-all does not run test-addons, it slipped under the radar. Mea culpa.
Fixes the following test runner error:
Traceback (most recent call last):
File "tools/test.py", line 1522, in <module>
sys.exit(Main())
File "tools/test.py", line 1454, in Main
test_list = root.ListTests([], path, context, arch, mode)
File "tools/test.py", line 720, in ListTests
test.AddTestsToList(result, full_path, path, context, arch, mode)
File "tools/test.py", line 690, in AddTestsToList
arch, mode)
File "/home/bnoordhuis/src/v1.x/test/gc/../testpy/__init__.py", line 176, in ListTests
result.append(SimpleTestCase(test, file_path, mode, self.context, self))
TypeError: __init__() takes at least 7 arguments (6 given)
R=@chrisdickinson