Use emptyDir instead of volumefromsecret for keyfile (#395)

Author: Nikolas De Giorgis

controllers/construct/mongodbstatefulset.go

@@ -85,9 +85,8 @@ func BuildMongoDBReplicaSetStatefulSetModificationFunction(mdb MongoDBStatefulSe
 
 	logVolumeMount := statefulset.CreateVolumeMount(logVolumeName, automationconfig.DefaultAgentLogPath)
 
-	mode := int32(0600)
 	keyFileNsName := mdb.GetAgentKeyfileSecretNamespacedName()
-	keyFileVolume := statefulset.CreateVolumeFromSecret(keyFileNsName.Name, keyFileNsName.Name, statefulset.WithSecretDefaultMode(&mode))
+	keyFileVolume := statefulset.CreateVolumeFromEmptyDir(keyFileNsName.Name)
 	keyFileVolumeVolumeMount := statefulset.CreateVolumeMount(keyFileVolume.Name, "/var/lib/mongodb-mms-automation/authentication", statefulset.WithReadOnly(false))
 	keyFileVolumeVolumeMountMongod := statefulset.CreateVolumeMount(keyFileVolume.Name, "/var/lib/mongodb-mms-automation/authentication", statefulset.WithReadOnly(false))