chore: set chart-testing project wide to 3.11.0

This makes it so that 3.11.0 is the version used consistently and sets
it at the top-level.

Change-Id: I8a7c799c0aa1f57a1dbfa7a2d7a5c06a67e54749
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>

playbooks/lint.yaml

@@ -18,8 +18,7 @@
     - ensure-python
     - ensure-pip
     - ensure-helm
-    - name: ensure-chart-testing
-      chart_testing_version: "3.11.0"
+    - ensure-chart-testing
     - name: chart-testing
       chart_testing_options: "--target-branch=master --chart-dirs=. --validate-maintainers=false --check-version-increment=false"
       zuul_work_dir: "{{ work_dir }}"

zuul.d/project.yaml

@@ -17,6 +17,7 @@
     vars:
       # shared across all jobs
       helm_version: "3.18.1"
+      chart_testing_version: "3.11.0"
 
     templates:
       - publish-openstack-docs-pti