Allow linting failure and limit linting scope

.gitlab-ci.yml

@@ -13,6 +13,7 @@ stages:
   - unit-tests
 linting:
   stage: linting
+  allow_failure: true
   script:
     - tox -e pep8
 unit_test:

tox.ini

@@ -18,5 +18,5 @@ commands = stestr run {posargs}
 [testenv:pep8]
 commands =
 ;    doc8 doc/source/ README.rst
-    flake8 {posargs}
+    flake8 devices/{posargs}
     bandit -r devices -x test -n5 -ll # -s B320
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