Merge branch 'add-canary-metrics' into 'master'

Add metrics for monitoring canary tracks for CPU and Memory

See merge request gitlab-org/gitlab-ee!3292

config/prometheus/additional_metrics.yml

@@ -145,17 +145,23 @@
       - container_memory_usage_bytes
     weight: 1
     queries:
-    - query_range: '(sum(container_memory_usage_bytes{container_name!="POD",%{environment_filter}}) / count(container_memory_usage_bytes{container_name!="POD",%{environment_filter}})) /1024/1024'
+    - query_range: '(sum(container_memory_usage_bytes{container_name!="POD",environment="%{ci_environment_slug}"}) / count(container_memory_usage_bytes{container_name!="POD",environment="%{ci_environment_slug}"})) /1024/1024'
       label: Average
       unit: MB
+    - query_range: '(sum(container_memory_usage_bytes{container_name!="POD",environment="%{ci_environment_slug}-canary"}) / count(container_memory_usage_bytes{container_name!="POD",environment="%{ci_environment_slug}-canary"})) /1024/1024'
+      label: Average
+      unit: MB
+      track: canary
   - title: "CPU Utilization"
     y_label: "CPU Utilization (%)"
     required_metrics:
      - container_cpu_usage_seconds_total
     weight: 1
     queries:
-    - query_range: 'sum(rate(container_cpu_usage_seconds_total{container_name!="POD",%{environment_filter}}[2m])) by (cpu)  * 100'
+    - query_range: 'sum(rate(container_cpu_usage_seconds_total{container_name!="POD",environment="%{ci_environment_slug}"}[2m])) * 100'
       label: CPU
       unit: "%"
-      series:
-        - label: cpu
+    - query_range: 'sum(rate(container_cpu_usage_seconds_total{container_name!="POD",environment="%{ci_environment_slug}-canary"}[2m])) * 100'
+      label: CPU
+      unit: "%"
+      track: canary
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