tools: add tool for pep8 reformatting

This calls the PEP8 linter called autopep8:

https://github.com/hhatto/autopep8

So we can make autotest to fully adhere to PEP8,
since there's a tool that can enforce the standard.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Signed-off-by: yangdongsheng <yangds.fnst@cn.fujitsu.com>
tools: add pep8 check into check_patch

Integrate the PEP8 linter into the virt-test full
tree and patch verification process. It works by
verifying whether the PEP8 linter modified the file in
place, if it did, it means there are non compliances
in the code.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Signed-off-by: yangdongsheng <yangds.fnst@cn.fujitsu.com>
tools: Add codespell

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
tools/check_patch.py: Add codespell check

Integrate codespell to our own check_patch.py script.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
run_pep8 refactor

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>