CI: Fix chart testing. (#12260)

Co-authored-by: Aran Shavit <Aranshavit@gmail.com>

.github/workflows/ci.yaml

@@ -240,7 +240,7 @@ jobs:
           git diff --exit-code charts/ingress-nginx/README.md
 
       - name: Run tests
-        run: helm unittest charts/ingress-nginx
+        run: helm unittest charts/ingress-nginx --file "tests/**/*_test.yaml"
 
   chart-test:
     name: Chart / Test

charts/ingress-nginx/tests/admission-webhooks/validating-webhook_test.yaml

@@ -20,7 +20,7 @@ tests:
           of: ValidatingWebhookConfiguration
       - equal:
           path: metadata.name
-          value: RELEASE-NAME-admission
+          value: RELEASE-NAME-ingress-nginx-admission
 
   - it: should create a ValidatingWebhookConfiguration with a custom port if `controller.admissionWebhooks.service.servicePort` is set
     set: