travis: update to use Go 1.7, glide

.travis.yml

@@ -1,23 +1,16 @@
 language: go
 
 go:
-  - 1.6
+  - 1.7
-  - 1.5
   - tip
 
 sudo: false
 
-before_install:
-  - export GO15VENDOREXPERIMENT=1
-  - RepoName=`basename $PWD`; SrcDir=`dirname $PWD`; DestDir="`dirname $SrcDir`/coreos"
-  - if [[ "$SrcDir" != "$DestDir" ]]; then mv "$SrcDir" "$DestDir"; cd ../../coreos/$RepoName; export TRAVIS_BUILD_DIR=`dirname $TRAVIS_BUILD_DIR`/$RepoName; fi
-
-
 install:
-  - echo 'nop'
+- mkdir $GOPATH/bin && curl https://glide.sh/get | sh
 
 script:
-  - go test -v $(go list ./... | grep -v /vendor/)
+- go test $(glide novendor | grep -v contrib)
 
 services:
 - postgresql