Health check for OCI ObjectStorage that works in SE and MP

[spericas]

This is WIP.

Liveness health check for OCI ObjectStorage that works in SE and MP, like our other built-in health checks. Verifies that a bucket is accessible (HTTP GET) using the OCI client API. In addition to the user-specific OCI credentials, it needs the namespace and bucket name. MP and SE examples have been updated to use the new health check.

Current output for health check is shown below: `GET http://.../health/live

{
  "outcome": "UP",
  "status": "UP",
  "checks": [
    {
      "name": "objectStorage",
      "state": "UP",
      "status": "UP",
      "data": {
        "bucket": "main",
        "namespace": "idv5cxr1uqqk"
      }
    }
  ]
}

Signed-off-by: Santiago Pericasgeertsen santiago.pericasgeertsen@oracle.com