Fix helm tests (#827)

SUMMARY

Some of the charts we've used for testing are no longer available at the old helm repository urls, as they've been moved to oci registries. This updates those charts.
In the longer term, we should find a better way to handle these kinds of test fixtures, probably by switching to local charts as much as possible.

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Bugfix Pull Request
Docs Pull Request
Feature Pull Request
New Module Pull Request

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Reviewed-by: Helen Bailey <hebailey@redhat.com>
Reviewed-by: Yuriy Novostavskiy

tests/integration/targets/helm_pull/tasks/main.yml

@@ -203,9 +203,8 @@
         - name: Download chart using untar_chart
           helm_pull:
             binary_path: "{{ helm_path }}"
-            chart_ref: redis
+            chart_ref: "oci://registry-1.docker.io/bitnamicharts/redis"
             destination: "{{ destination }}"
-            repo_url: "https://charts.bitnami.com/bitnami"
             untar_chart: true
           register: _result