ansible-test - Improve pep8 compat with black (#84867)

changelogs/fragments/ansible-test-update.yml

@@ -4,3 +4,4 @@ minor_changes:
   - ansible-test - Disable the ``deprecated-`` prefixed ``pylint`` rules as their results vary by Python version.
   - ansible-test - Update the ``base`` and ``default`` containers.
   - ansible-test - Update sanity test requirements to latest available versions.
+  - ansible-test - Disable the ``pep8`` sanity test rules ``E701`` and ``E704`` to improve compatibility with ``black``.

test/lib/ansible_test/_util/controller/sanity/pep8/current-ignore.txt

@@ -7,3 +7,7 @@ E741
 # Unfortunately this means it also conflicts with the output from `black`.
 # See: https://github.com/PyCQA/pycodestyle/issues/373
 E203
+
+# The "multiple statements on one line" rules conflict with `black` for no-impl class and method defs.
+E701
+E704