VOL-642: Installation of VOLT-HA in a Kubernetes cluster

- Changed existing installer to support swarm and kubernetes
- Using kubespray as the base framework to deploy kubernetes
- Implemented config/deploy/teardown tasks for voltha

Amendments:

- Changed from python to python3 when running the inventory builder

Change-Id: I059fd348b9a749397b373e333b5602944c817745
diff --git a/install/ansible/roles/voltha-kubernetes/tasks/main.yml b/install/ansible/roles/voltha-kubernetes/tasks/main.yml
new file mode 100644
index 0000000..6053343
--- /dev/null
+++ b/install/ansible/roles/voltha-kubernetes/tasks/main.yml
@@ -0,0 +1,8 @@
+- import_tasks: config.yml
+  when: config_voltha is defined
+
+- import_tasks: deploy.yml
+  when: deploy_voltha is defined
+
+- import_tasks: teardown.yml
+  when: teardown_voltha is defined