grafana otlp broke?

[arilotter]

with no changes, we stopped being able to send metrics to grafana. 401 error.

grafana dashboard showed no API key found, so i generated a new one -

even when passed seemingly correctly, it doesn't work with the same error.

next steps: try printing the actual auth header from within the psyche binary, and copy-paste that into a sample curl a-la

curl -v -X POST $OLTP_LOGS_URL \
  -H "Content-Type: application/json" \
  -H "authorization: $OLTP_AUTH_HEADER" \
  -d '{
    "resourceLogs": [
      {
        "resource": {
          "attributes": [
            {
              "key": "service.name",
              "value": {
                "stringValue": "my-service"
              }
            }
          ]
        },
        "scopeLogs": [
          {
            "scope": {
              "name": "my-app"
            },
            "logRecords": [
              {
                "timeUnixNano": "1768493072000000000",
                "severityText": "INFO",
                "body": {
                  "stringValue": "This is a test log message"
                },
                "attributes": [
                  {
                    "key": "log.level",
                    "value": {
                      "stringValue": "info"
                    }
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  }'