Travis: more dep, less glide

.travis.yml

@@ -9,11 +9,9 @@ go:
 
 install:
   - export GO15VENDOREXPERIMENT=1
-  - go get github.com/Masterminds/glide
-  - go install github.com/Masterminds/glide
-  - glide up
+  - godep ensure
 
 script:
   - ./.travis.gofmt.sh
   - make guerrillad
-  - make test
+  - make test