Added support for running SiaB with SD-BNG

- new mininet topology with PPPoE server
- new fabric configuration for Ponsim
- new DT-workflow
- new values file to run SD-BNG on SiaB

Change-Id: Ib9d61111d6399e9240afb60bb6a77f152a6ecd01
diff --git a/workflows/dt-workflow/values.yaml b/workflows/dt-workflow/values.yaml
new file mode 100644
index 0000000..a3de677
--- /dev/null
+++ b/workflows/dt-workflow/values.yaml
@@ -0,0 +1,37 @@
+---
+# Copyright 2019-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default values for the dt-workflow profile.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+
+nameOverride: ""
+fullnameOverride: ""
+
+images:
+  tosca_loader:
+    repository: 'xosproject/tosca-loader'
+    tag: '{{ .Chart.AppVersion }}'
+    pullPolicy: 'Always'
+
+global:
+  registry: ""
+
+dt-workflow-driver:
+  kafkaService: "cord-platform-kafka"
+
+xosAdminUser: "admin@opencord.org"
+xosAdminPassword: "letmein"