Enabling changes to Default Services within applications during deployment on a Service Fabric cluster

As it turns out, as of Service Fabric runtime 6.1, allowing applications to change their Default Services during an upgrade is not enabled by default. This can be controlled by the setting called 'EnableDefaultServicesUpgrade' in the cluster level setting group called 'ClusterManager'. This setting can be set in the Cluster Manifest if you're managing your own cluster on-premise, or it can be set in an ARM template if deploying to an Azure-based cluster like so:

{
"apiVersion": "2016-09-01",
"type": "Microsoft.ServiceFabric/clusters",
"name": "[parameters('clusterName')]",
"location": "[parameters('location')]",
"dependsOn": [
"[variables('supportLogStorageAccountName')]"
],
"properties": {
"certificate": {
"thumbprint": "[parameters('certificateThumbprint')]",
"x509StoreName": "[parameters('certificateStoreValue')]"
},
"clientCertificateCommonNames": [],
"clientCertificateThumbprints": [],
"clusterState": "Default",
"diagnosticsStorageAccountConfig": {
"blobEndpoint": "[reference(concat('Microsoft.Storage/storageAccounts/', variables('supportLogStorageAccountName')), '2017-06-01').primaryEndpoints.blob]",
"protectedAccountKeyName": "StorageAccountKey1",
"queueEndpoint": "[reference(concat('Microsoft.Storage/storageAccounts/', variables('supportLogStorageAccountName')), '2017-06-01').primaryEndpoints.queue]",
"storageAccountName": "[variables('supportLogStorageAccountName')]",
"tableEndpoint": "[reference(concat('Microsoft.Storage/storageAccounts/', variables('supportLogStorageAccountName')), '2017-06-01').primaryEndpoints.table]"
},
"fabricSettings": [
{
"parameters": [
{
"name": "ClusterProtectionLevel",
"value": "[parameters('clusterProtectionLevel')]"
}
],
"name": "Security"
},
{
"parameters": [
{
"name": "EnableDefaultServicesUpgrade",
"value": "[parameters('enableDefaultServicesUpgrade')]"
}
],
"name": "ClusterManager"
}
],
"managementEndpoint": "[concat('https://',reference(variables('lbIPName')).dnsSettings.fqdn,':',variables('nt0fabricHttpGatewayPort'))]",
"nodeTypes": [
{
"name": "[variables('vmNodeType0Name')]",
"applicationPorts": {
"endPort": "[variables('nt0applicationEndPort')]",
"startPort": "[variables('nt0applicationStartPort')]"
},
"clientConnectionEndpointPort": "[variables('nt0fabricTcpGatewayPort')]",
"durabilityLevel": "Bronze",
"ephemeralPorts": {
"endPort": "[variables('nt0ephemeralEndPort')]",
"startPort": "[variables('nt0ephemeralStartPort')]"
},
"httpGatewayEndpointPort": "[variables('nt0fabricHttpGatewayPort')]",
"isPrimary": true,
"vmInstanceCount": "[parameters('nt0InstanceCount')]"
}
],
"provisioningState": "Default",
"reliabilityLevel": "Silver",
"upgradeMode": "Automatic",
"vmImage": "Windows"
},
"tags": {
"resourceType": "Service Fabric",
"displayName": "IoT Service Fabric Cluster",
"clusterName": "[parameters('clusterName')]"
}
}