VOL-1460 Updated core to use voltha-protos instead of local protos
Moved protos to python directory in order to maintain functionaly of containers built there.
Added capability to do local builds of protos
Added instructions on running dep ensure for getting protos.
Updated github.com/golang/protobuf version to v1.3.1

Change-Id: Ia6ef55f07f0d5dcb5b750d7c37b21b71db85bfc4
diff --git a/vendor/github.com/cevaris/ordered_map/.travis.yml b/vendor/github.com/cevaris/ordered_map/.travis.yml
index 6d74ee9..193242f 100644
--- a/vendor/github.com/cevaris/ordered_map/.travis.yml
+++ b/vendor/github.com/cevaris/ordered_map/.travis.yml
@@ -3,6 +3,9 @@
 
 go:
   - tip
+  - 1.12
+  - 1.11
+  - 1.10
   - 1.9
   - 1.8
   - 1.7
diff --git a/vendor/github.com/cevaris/ordered_map/README.md b/vendor/github.com/cevaris/ordered_map/README.md
index 37b4503..bc3e366 100644
--- a/vendor/github.com/cevaris/ordered_map/README.md
+++ b/vendor/github.com/cevaris/ordered_map/README.md
@@ -9,7 +9,7 @@
 - Full support Key/Value for all data types
 - Exposes an Iterator that iterates in order of insertion
 - Full Get/Set/Delete map interface
-- Supports Golang v1.3 through v1.9
+- Supports Golang v1.3 through v1.12
 
 ## Download and Install