The newly added ptest-python-pytest removes duplication for:
1. Copying pytest files to the ptest directory
2. Adding standard pytest dependencies
3. Adding a common run-ptest script using pytest
(From OE-Core rev: 8d84d9e19b9292b1863921611924714d77c41d21)
Signed-off-by: Derek Straka <derek@asterius.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
