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/voltha-infra/Chart.yaml b/voltha-infra/Chart.yaml
new file mode 100644
index 0000000..1354d94
--- /dev/null
+++ b/voltha-infra/Chart.yaml
@@ -0,0 +1,74 @@
+# 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.
+---
+apiVersion: v2
+description: A Helm chart to install the required infrastructure for VOLTHA
+keywords:
+  - "onf"
+  - "voltha"
+  - "onos"
+  - "radius"
+  - "sadis-server"
+home: "https://www.opennetworking.org/voltha"
+icon: "https://guide.opencord.org/logos/voltha.svg"
+maintainers:
+  - name: "Open Networking Foundation"
+    email: "info@opennetworking.org"
+    url: "https://www.opennetworking.org"
+name: voltha-infra
+
+appVersion: "1.0"
+version: 0.1.0
+
+dependencies:
+  - name: onos-classic
+    repository: https://charts.onosproject.org
+    version: 0.1.10
+    condition: onos-classic.enabled
+  - name: bbsim-sadis-server
+    # repository: https://charts.opencord.org
+    repository: "file://../bbsim-sadis-server"
+    version: 0.1.1
+    condition: bbsim-sadis-server.enabled
+  - name: etcd
+    repository: https://charts.bitnami.com/bitnami
+    version: 5.4.2
+    condition: etcd.enabled
+  - name: kafka
+    repository: https://charts.bitnami.com/bitnami
+    version: 12.5.0
+    condition: kafka.enabled
+  - name: freeradius
+    repository: https://charts.opencord.org
+    version: 1.0.2
+    condition: radius.enabled
+  - name: voltha-tracing
+    repository: https://charts.opencord.org
+    version: 1.0.0
+    condition: voltha-tracing.enabled
+  - name: elasticsearch
+    repository: https://helm.elastic.co
+    version: 7.10.1
+    condition: efk.enabled
+  - name: kibana
+    repository: https://helm.elastic.co
+    version: 7.10.1
+    condition: efk.enabled
+  - name: fluentd-elasticsearch
+    repository: https://kiwigrid.github.io
+    version: 9.6.2
+    # TODO kiwigrid is deprecated, use: https://github.com/kokuwaio/helm-charts/tree/main/charts/fluentd-elasticsearch
+    # repository: https://kokuwaio.github.io/helm-charts
+    # version: 11.7.1
+    condition: efk.enabled