RDC Prometheus plugin

The rdc_prometheus.py is a Prometheus plugin for RDC
The rdc_prometheus_example.yml and prometheus_targets.json are
example Prometheus configuration. If there are multiple compute
nodes, they can be defined at prometheus_targets.json.

Change-Id: I3611b1e8a166f6608351f6e7644808bf72a4d3a0


[ROCm/rdc commit: 9c7a1347ea]

projects/rdc/python_binding/rdc_prometheus_example.yml

@@ -0,0 +1,17 @@
+# global config
+global:
+  scrape_interval:     10s # Set the scrape interval to every 10 seconds. Default is every 1 minute.
+  evaluation_interval: 10s # Evaluate rules every 10 seconds. The default is every 1 minute.
+  # scrape_timeout is set to the global default (10s).
+
+# A scrape configuration where the endpoints to scrape will be defined at prometheus_targets.json:
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'rdc'
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    file_sd_configs:
+    - files:
+        - 'prometheus_targets.json'