dev_1.0.0_sundp 完成Metric模块及模块e2e测试 (#18)

Co-authored-by: sundapeng.sdp <sundapeng@hashdata.cn>
Reviewed-on: #18
Reviewed-by: xuxt <xuxt@zgclab.edu.cn>
Reviewed-by: yuyr <yuyr@zgclab.edu.cn>
Reviewed-by: huhy <husteryezi@163.com>

src/metric/prometheus/demo-targets/dcgm_exporter.json

@@ -0,0 +1,9 @@
+[
+  {
+    "targets": ["localhost:9400"],
+    "labels": {
+      "job": "dcgm",
+      "instance": "dcgm-exporter"
+    }
+  }
+]