Use pre-commit for 'pep8' tox target, bump versions

We want to bump the versions of hacking, but doing so requires changes
in two places: '.pre-commit-config.yaml' and 'tox.ini'. This is silly:
we can simply use tox to handle pre-commit and leave all other
dependencies to pre-commit. Do this, migrating doc8 to pre-commit and
bumping the other dependencies in the process.

Change-Id: I26fa07145129d3ef9cb17693427ed70e55dbaaf5
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.pre-commit-config.yaml

@@ -4,7 +4,7 @@ default_language_version:
   python: python3
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+    rev: v4.4.0
     hooks:
       - id: trailing-whitespace
       - id: mixed-line-ending
@@ -16,13 +16,18 @@ repos:
       - id: debug-statements
       - id: check-yaml
         files: .*\.(yaml|yml)$
-        exclude: '^.zuul.yaml'
+        exclude: '^zuul.d/.*$'
+  - repo: https://github.com/PyCQA/doc8
+    rev: v1.1.1
+    hooks:
+      - id: doc8
   - repo: local
     hooks:
       - id: flake8
         name: flake8
         additional_dependencies:
-          - hacking>=3.0.1,<3.1.0
+          - hacking>=6.0.1,<6.1.0
+          - flake8-import-order>=0.18.2,<0.19.0
         language: python
         entry: flake8
         files: '^.*\.py$'

tox.ini

@@ -58,14 +58,9 @@ commands =
 
 [testenv:pep8]
 deps =
-    hacking>=3.1.0,<4.0.0 # Apache-2.0
+    pre-commit
-    flake8-import-order>=0.17.1 # LGPLv3
-    pycodestyle>=2.0.0,<2.7.0 # MIT
-    Pygments>=2.2.0 # BSD
-    doc8>=0.8.0 # Apache 2.0
 commands =
-    flake8 {posargs}
+    pre-commit run --all-files --show-diff-on-failure
-    doc8 doc/source README.rst
 
 [testenv:venv]
 deps =