[hack] update with new sail stuff

[jmazzitelli]

Some things have changed with Sail operator. This updates the hack scripts to work with it.

To test:

1. Start an OpenShift cluster (e.g. hack/crc-openshift.sh start)
2. Use oc to log into the cluster as a kubeadmin user
3. Install the operators for Sail, Kiali, Tempo, etc.: hack/istio/sail/install-ossm-release.sh install-operators
4. Install a Istio, Kiali, Prometheus, etc. etc.: hack/istio/sail/install-ossm-release.sh install-istio
5. See that everything eventually installs successfully: hack/istio/sail/install-ossm-release.sh status
6. Bring up the Kiali UI in a browser: hack/istio/sail/install-ossm-release.sh kiali-ui
7. See that you can get to the UI and things look OK

When you are done, you can delete everything except the operators with: hack/istio/sail/install-ossm-release.sh delete-istio

After Istio and all other components are removed, you can then delete the operators which takes you back to a clean slate: hack/istio/sail/install-ossm-release.sh delete-operators

[jmazzitelli]

Note the one change, replacing quay.io/official-images/busybox:1.28 with quay.io/jitesoft/alpine:latest was because the original one is no longer accessible, and all we really need is some small image with the ability to run the small sh command.

[jshaughn]

Ran through the test steps, works like a chaahm!