issue #590: add dummy package for new test.

tests/data/module_finder/pkg_like_ansible/module_utils/distro/__init__.py

@@ -0,0 +1,5 @@
+# #590: a package that turns itself into a module.
+I_AM = "the package that was replaced"
+import sys
+from pkg_like_ansible.module_utils.distro import _distro
+sys.modules[__name__] = _distro

tests/data/module_finder/pkg_like_ansible/module_utils/distro/_distro.py

@@ -0,0 +1 @@
+I_AM = "the module that replaced the package"