add cel selector to narrow down match

Author: vitkyrka

argo_workflows/assets/configuration/spec.yaml

@@ -23,4 +23,14 @@ files:
     overrides:
       value.example:
       - workflow-controller
+  - name: cel_selector
+    description: Advanced container selector rules for Autodiscovery
+    enabled: true
+    value:
+      type: object
+      example:
+        containers:
+        # Narrow down matching containers since the short image name is generic
+        # and doesn't identify the container as being part of Argo.
+        - container.image.reference.contains("argoproj/workflow-controller")
   - template: auto_conf/discovery

argo_workflows/datadog_checks/argo_workflows/data/auto_conf.yaml

@@ -6,6 +6,13 @@
 ad_identifiers:
   - workflow-controller
 
+## @param cel_selector - mapping - optional
+## Advanced container selector rules for Autodiscovery
+#
+cel_selector:
+  containers:
+  - container.image.reference.contains("argoproj/workflow-controller")
+
 ## Enables configuration discovery
 #
 discovery: {}