* ansible-test - Clarify need for empty __init__.py
* ansible-test - Update code-smell boilerplate.
* Update code-smell boilerplate for core.
* Update future boilerplate test for ansible-test.
All ansible-test code (except for targets) and core-specific sanity tests now use the same boilerplate.
The test also checks for unwanted `__future__` and `metaclass` boilerplate.
* Relocate target tools to the correct directory.
Several tools used on target Python versions were incorrectly placed in the controller directory.
This will help prevent accidental merging of content to recently obsoleted directories when adding new files.
It may also help contributors who have modified obsolete files understand where their changes should now be made.
