Add the `version` file to Must-Gather archive

Red Hat Insights team needs a marker which is a unique file that identifies which data collections (Logging Must-Gather archive, OCS/ODF Must-Gather archive, etc) are handled.

There is no file in registry.redhat.io/openshift-logging/cluster-logging-rhel8-operator Must-Gather archive that is particularly unique; According to the `must-gather` enhancements, there is a `version` file that indicates the product (first line) and the version (second line).

Slack discussion：
https://coreos.slack.com/archives/CFDM5CQMN/p1660663949645859
https://coreos.slack.com/archives/CFDM5CQMN/p1660665268133629