chore: loki tests

[Pehesi97]

What does this PR do?

This PR improves the Loki tests, adding a query to the API for recent log lines.

Related issues

Closes #161.

Checklist before merging

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have checked the contributing document.
• I have checked the existing Pull Requests to see whether someone else has raised a similar idea or question.
• I have added tests that prove my fix is effective or that my feature works.

[Pehesi97]

Still trying to improve these, but as a unit test, it doesn't look like a query to the Loki API will return anything useful.

[Pehesi97]

Example response:

{
  "status": "success",
  "data": {
    "resultType": "streams",
    "result": [],
    "stats": {
      "summary": {
        "bytesProcessedPerSecond": 0,
        "linesProcessedPerSecond": 0,
        "totalBytesProcessed": 0,
        "totalLinesProcessed": 0,
        "execTime": 0.001228,
        "queueTime": 0.000235,
        "subqueries": 0,
        "totalEntriesReturned": 0,
        "splits": 0,
        "shards": 0
      },
      "querier": {
        "store": {
          "totalChunksRef": 0,
          "totalChunksDownloaded": 0,
          "chunksDownloadTime": 0,
          "chunk": {
            "headChunkBytes": 0,
            "headChunkLines": 0,
            "decompressedBytes": 0,
            "decompressedLines": 0,
            "compressedBytes": 0,
            "totalDuplicates": 0
          }
        }
      },
      "ingester": {
        "totalReached": 1,
        "totalChunksMatched": 0,
        "totalBatches": 0,
        "totalLinesSent": 0,
        "store": {
          "totalChunksRef": 0,
          "totalChunksDownloaded": 0,
          "chunksDownloadTime": 0,
          "chunk": {
            "headChunkBytes": 0,
            "headChunkLines": 0,
            "decompressedBytes": 0,
            "decompressedLines": 0,
            "compressedBytes": 0,
            "totalDuplicates": 0
          }
        }
      },
      "cache": {
        "chunk": {
          "entriesFound": 0,
          "entriesRequested": 0,
          "entriesStored": 0,
          "bytesReceived": 0,
          "bytesSent": 0,
          "requests": 0,
          "downloadTime": 0
        },
        "index": {
          "entriesFound": 0,
          "entriesRequested": 0,
          "entriesStored": 0,
          "bytesReceived": 0,
          "bytesSent": 0,
          "requests": 0,
          "downloadTime": 0
        },
        "result": {
          "entriesFound": 0,
          "entriesRequested": 0,
          "entriesStored": 0,
          "bytesReceived": 0,
          "bytesSent": 0,
          "requests": 0,
          "downloadTime": 0
        }
      }
    }
  }
}