Use more unit test utils from community.internal_test_tools (#9918)
* Make conftest's patch_ansible_module use the context manager from .utils.
* Fix test dependencies.
* Use module mock utils from community.internal_test_tools.
* Use DataDictLoader from community.internal_test_tools.
* Use trust util from community.internal_test_tools.
(cherry picked from commit 8ab8010b6d)
* Move licenses to LICENSES/, run add-license.py, add LICENSES/MIT.txt.
* Replace 'Copyright:' with 'Copyright'
sed -i 's|Copyright:\(.*\)|Copyright\1|' $(rg -l 'Copyright:')
Co-authored-by: Maxwell G <gotmax@e.email>