update to latest gogo/protobuf, only test with modules enabled

.travis.yml

@@ -5,22 +5,20 @@ sudo: false
 
 go:
   - tip
+  - 1.12.x
   - 1.11.x
-  - 1.10.x
 
-matrix:
-  include:
-    - go: 1.11.x
-      env: GO111MODULE=on
+env:
+  - GO111MODULE=on
 
 go_import_path: github.com/metaverse/truss
 
 before_install:
   # protobuf
   # download, unzip in $HOME, add to $PATH
-  - wget https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip
-  - mv protoc-3.5.1-linux-x86_64.zip $HOME
-  - unzip ~/protoc-3.5.1-linux-x86_64.zip -d $HOME
+  - wget https://github.com/google/protobuf/releases/download/v3.6.1/protoc-3.6.1-linux-x86_64.zip
+  - mv protoc-3.6.1-linux-x86_64.zip $HOME
+  - unzip ~/protoc-3.6.1-linux-x86_64.zip -d $HOME
   - export PATH=$HOME/bin/:$PATH
 
 install:

Makefile

@@ -9,9 +9,9 @@ VERSION_DATE := $(shell $(MAKEFILE_PATH)/commit_date.sh)
 default: truss
 
 dependencies:
-	go get -u github.com/gogo/protobuf/protoc-gen-gogo
-	go get -u github.com/gogo/protobuf/protoc-gen-gogofaster
-	go get -u github.com/gogo/protobuf/proto
+	go get -u github.com/gogo/protobuf/protoc-gen-gogo@21df5aa0e680850681b8643f0024f92d3b09930c
+	go get -u github.com/gogo/protobuf/protoc-gen-gogofaster@21df5aa0e680850681b8643f0024f92d3b09930c
+	go get -u github.com/gogo/protobuf/proto@21df5aa0e680850681b8643f0024f92d3b09930c
 	go get -u github.com/kevinburke/go-bindata/...
 
 # Generate go files containing the all template files in []byte form