Fix required project for Neutron / OSP 17.1

Lack of coffee made me missed the additional parameter
should be written for a different job and not under
extra `vars` keyword... Thankfully it is weekend coming,
but first let's fix it...

znoyder/config.d/42-override-OSP-17.yml

@@ -313,8 +313,9 @@ override:
         vars:
           extra_commands:
             - dnf install -y python3-hacking python3-neutron-lib-tests
-          required-projects:
-            - python-neutron-lib
+      'osp-tox-pep8':
+        required-projects:
+          - python-neutron-lib
 
   'nova':
     'osp-17.0':