Minor fixes for unit test delegation.

(cherry picked from commit be199cfe90)

test/runner/lib/delegation.py

@@ -278,7 +278,6 @@ def delegate_docker(args, exclude, require, integration_targets):
             # run unit tests unprivileged to prevent stray writes to the source tree
             if isinstance(args, UnitsConfig):
                 writable_dirs = [
-                    '/root/ansible/lib/ansible.egg-info',
                     '/root/ansible/.pytest_cache',
                 ]
 

test/runner/lib/pytar.py

@@ -37,6 +37,7 @@ class DefaultTarFilter(TarFilter):
             '.tox',
             '.git',
             '.idea',
+            '.pytest_cache',
             '__pycache__',
             'ansible.egg-info',
         )