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/templates/_tosca.tpl b/workflows/dt-workflow/templates/_tosca.tpl
new file mode 100644
index 0000000..9209f11
--- /dev/null
+++ b/workflows/dt-workflow/templates/_tosca.tpl
@@ -0,0 +1,98 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+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.
+*/}}
+
+{{- define "dt-workflow.serviceGraphTosca" -}}
+tosca_definitions_version: tosca_simple_yaml_1_0
+imports:
+  - custom_types/dtworkflowdriverservice.yaml
+  - custom_types/voltservice.yaml
+  - custom_types/servicedependency.yaml
+  - custom_types/servicegraphconstraint.yaml
+description: dt-workflow-driver service graph
+topology_template:
+  node_templates:
+
+# These services must be defined before loading the graph
+
+    service#volt:
+      type: tosca.nodes.VOLTService
+      properties:
+        name: volt
+        must-exist: true
+
+    service#dt-workflow-driver:
+      type: tosca.nodes.DtWorkflowDriverService
+      properties:
+        name: dt-workflow-driver
+        must-exist: true
+
+    service_dependency#workflow_volt:
+      type: tosca.nodes.ServiceDependency
+      properties:
+        connect_method: none
+      requirements:
+        - subscriber_service:
+            node: service#dt-workflow-driver
+            relationship: tosca.relationships.BelongsToOne
+        - provider_service:
+            node: service#volt
+            relationship: tosca.relationships.BelongsToOne
+
+    constraints:
+      type: tosca.nodes.ServiceGraphConstraint
+      properties:
+        constraints: '[[null, "rcord", null], [null, "volt", null], ["onos", "vrouter", "dt-workflow-driver"], ["fabric", null, null]]'
+{{- end -}}
+
+{{- define "dt-workflow.onosTosca" -}}
+tosca_definitions_version: tosca_simple_yaml_1_0
+
+imports:
+   - custom_types/onosapp.yaml
+   - custom_types/onosservice.yaml
+   - custom_types/serviceinstanceattribute.yaml
+
+description: Configures workflow-specific ONOS apps
+
+topology_template:
+  node_templates:
+
+    service#onos:
+      type: tosca.nodes.ONOSService
+      properties:
+          name: onos
+          must-exist: true
+
+    onos_app#olt:
+      type: tosca.nodes.ONOSApp
+      properties:
+        name: olt
+        must-exist: true
+
+    olt-config-attr:
+      type: tosca.nodes.ServiceInstanceAttribute
+      properties:
+        name: /onos/v1/configuration/org.opencord.olt.impl.Olt?preset=true
+        value: >
+          {
+            "enableDhcpOnProvisioning" : false
+          }
+      requirements:
+        - service_instance:
+            node: onos_app#olt
+            relationship: tosca.relationships.BelongsToOne
+{{- end -}}