VOL-4153: Improve storage usage on etcd
- Create protobuf message definitions for techprofile template,
  techprofile instance and resource instance
- Introduce new InterAdapterTechProfileInstanceRequestMessage message
  in the inter_container.proto interface to allow for openonu adapter
  to request TP instance for a subscriber when openonu adapter needs
  it (esp. after adapter restarts and it needs to reconcile subscriber
  data).
- Enhance InterAdapterTechProfileDownloadMessage message so that
  now onu adapter receives the TP instance message directly on from the
  olt adapter and need not download from KV store (given that TP instance
  will no longer be stored on etcd).

Change-Id: Ieff5afc70fac4cee32cdb114e4992456e6c11177
diff --git a/VERSION b/VERSION
index 5d30083..6aba2b2 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.10
+4.2.0