Cannot read environment variable from ConfigMap or Secret

[hertfelder]

The env section in the hivemqCluster CRD only allows for key and value:

helm-charts/charts/hivemq-operator/hivemqCluster.json

Lines 104 to 123 in e54315b

	"env": {
	"description": "Additional environment variables for the cluster",
	"type": "array",
	"items": {
	"type": "object",
	"javaType": "com.hivemq.openapi.spec.Env",
	"properties": {
	"name": {
	"type": "string"
	},
	"value": {
	"type": "string"
	}
	},
	"required": [
	"name",
	"value"
	]
	}
	},

When I want to set the Control Center user and password from a secret, this is obviously not possible. It is only possible to set it directly in the CRD, which lacks flexibility and security (user/password (hashed) in Git).