Add plain_http parameter to helm, helm_pull and helm_template

[DaruZero]

SUMMARY

This change introduces the plain_http parameter to modules that can interact with OCI registries. This in needed in cases where the OCI registry does not use SSL encryption, forcing Helm to send HTTP requests instead of HTTPS

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

helm, helm_pull and helm_template

ADDITIONAL INFORMATION

This is the output when trying to use an OCI registry that is not configured to use SSL certs.

fatal: [localhost]: FAILED! => {"changed": false, "command": "/usr/local/bin/helm show chart 'oci://<http-registry>/charts/foo'", "msg": "Failure when executing Helm command. Exited 1.\nstdout: \nstderr: Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client\n", "stderr": "Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client\n", "stderr_lines": ["Error: Get \"https://<http-registry>/v2/charts/foo/tags/list\": http: server gave HTTP response to HTTPS client"], "stdout": "", "stdout_lines": []}

[softwarefactory-project-zuul]

Build succeeded.
https://ansible.softwarefactory-project.io/zuul/buildset/a126a9d0a35e4692a25c7929d60c552e

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