Allow configuring env vars for CWAgent CR (#232)

Author: sky333999

charts/amazon-cloudwatch-observability/templates/linux/cloudwatch-agent-custom-resource.yaml

@@ -259,6 +259,9 @@ spec:
   {{ end }}
   - name: K8S_CLUSTER_NAME
     value: {{ $.Values.clusterName | quote }}
+  {{- with $agent.env }}
+  {{- . | toYaml | nindent 2 }}
+  {{- end }}
   {{- dict "component" $agent "context" $ | include "amazon-cloudwatch-observability.common.tolerations" | nindent 2 }}
 ---
 {{- end }}

charts/amazon-cloudwatch-observability/values.yaml

@@ -1254,6 +1254,7 @@ agent:
       us-gov-east-1: 743662458514.dkr.ecr.us-gov-east-1.amazonaws.com
       us-gov-west-1: 743662458514.dkr.ecr.us-gov-west-1.amazonaws.com
   enabled: true
+  env: []
   priorityClassName: system-node-critical
   affinity:
     nodeAffinity: