use PredefinedVariables.CI_COMMIT_REF_SLUG as default image tag for kaniko builds

Author: ThomasSteinbach

gcip/addons/kaniko/jobs.py

@@ -82,6 +82,9 @@ def execute(
     if image_name is None:
         image_name = PredefinedVariables.CI_PROJECT_NAME
 
+    if not image_tag and PredefinedVariables.CI_COMMIT_REF_SLUG:
+        image_tag = PredefinedVariables.CI_COMMIT_REF_SLUG
+
     image_tag_postfix = ""
     if image_tag:
         image_tag_postfix = f":{image_tag}"

setup.cfg

@@ -3,7 +3,7 @@ statistics = True
 doctests = True
 max_line_length = 140
 max_doc_length = 140
-max-complexity = 22
+max-complexity = 25
 
 [yapf]
 arithmetic_precedence_indication=True