travis: switch to unencrypted cookie

Otherwise rate limiting fix does not work for PRs from forks

.travis.yml

@@ -2,9 +2,6 @@ sudo: false
 language: go
 go:
 - 1.6
-before_install:
-- openssl aes-256-cbc -K $encrypted_409871ff96c7_key -iv $encrypted_409871ff96c7_iv
-  -in scripts/gogetcookie.sh.enc -out scripts/gogetcookie.sh -d
 install:
 # This script is used by the Travis build to install a cookie for
 # go.googlesource.com so rate limits are higher when using `go get` to fetch

scripts/gogetcookie.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+touch ~/.gitcookies
+chmod 0600 ~/.gitcookies
+
+git config --global http.cookiefile ~/.gitcookies
+
+tr , \\t <<\__END__ >>~/.gitcookies
+.googlesource.com,TRUE,/,TRUE,2147483647,o,git-paul.hashicorp.com=1/z7s05EYPudQ9qoe6dMVfmAVwgZopEkZBb1a2mA5QtHE
+__END__