Added voltha-infra chart
Added voltha-stack chart
Moved "defaults" values to "global" so that they can be managed by the
macro charts
Added examples for different workflows

Change-Id: I5fb2bfa54a1be725892445e93bd8a35d608e5d14
diff --git a/examples/tt-values.yaml b/examples/tt-values.yaml
new file mode 100644
index 0000000..027ae14
--- /dev/null
+++ b/examples/tt-values.yaml
@@ -0,0 +1,77 @@
+---
+
+# Copyright 2020-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.
+
+# override ONOS config
+onos:
+  componentConfig:
+    "org.opencord.olt.impl.OltFlowService": >
+      {
+        "enableDhcpOnNni": "true",
+        "defaultTechProfileId": "64",
+        "enableIgmpOnNni": "true",
+        "enableEapol": "false",
+        "enableDhcpV6": "false",
+        "enableDhcpV4": "true"
+      }
+
+# override BBSim config
+servicesConfig:
+  workflow: tt
+  services:
+    - name: hsia
+      uni_tag_match: 35
+      c_tag: 900
+      c_tag_allocation: unique
+      s_tag: 900
+      s_tag_allocation: shared
+      tp_id: 64
+    - name: voip
+      uni_tag_match: 65
+      c_tag: 444
+      c_tag_allocation: shared
+      s_tag: 333
+      s_tag_allocation: shared
+      needs_dhcp: true
+      tp_id: 65
+      configure_mac_address: true
+      us_pon_c_tag_priority: 7
+      us_pon_s_tag_priority: 7
+      ds_pon_c_tag_priority: 7
+      ds_pon_s_tag_priority: 7
+    - name: vod
+      uni_tag_match: 55
+      c_tag: 55
+      c_tag_allocation: shared
+      s_tag: 555
+      s_tag_allocation: shared
+      needs_dhcp: true
+      needs_igmp: true
+      tp_id: 66
+      configure_mac_address: true
+      us_pon_c_tag_priority: 5
+      us_pon_s_tag_priority: 5
+      ds_pon_c_tag_priority: 5
+      ds_pon_s_tag_priority: 5
+    # NOTE: the multicast service must be called MC unless you set
+    # multicastServiceName to something else in org.opencord.olt.impl.Olt
+    - name: MC
+      c_tag: 55
+      c_tag_allocation: shared
+      s_tag: 550
+      s_tag_allocation: shared
+      tp_id: 66
+      ds_pon_c_tag_priority: 5
+      ds_pon_s_tag_priority: 5