fix(circleci): Fixing the glide/vendor cache so it is used by glide

This commit does a few things:
* It moves the information being cached to be the glide cache.
  This will make the glide install process faster.
* The cache is restored from prior to installing the dependencies.

.circleci/config.yml

@@ -10,13 +10,17 @@ jobs:
     steps:
       - checkout
       - setup_remote_docker
+      - restore_cache:
+          keys:
+            - glide-{{ checksum "glide.yaml" }}-{{ checksum "glide.lock" }}
+            - glide- # used as a fall through if the checksum fails to find exact entry
       - run:
           name: install dependencies
           command: make bootstrap
       - save_cache:
-          key: vendor-{{ checksum "glide.yaml" }}-{{ checksum "glide.lock" }}
+          key: glide-{{ checksum "glide.yaml" }}-{{ checksum "glide.lock" }}
           paths:
-            - vendor
+            - /root/.glide  # Where the glide cache is stored
       - run:
           name: test
           command: .circleci/test.sh

glide.lock

-hash: 650f1d4cd9e9dc5ba76480a5465923ce1bbd11b8fa956b644aaf975e8f7e1f33
-updated: 2017-10-12T13:08:50.435765-07:00
+hash: 397d714c3a444071879981d3e6575931bd637166e845c6577eaea08ffde7e33d
+updated: 2017-10-27T11:04:22.887120936-04:00
 imports:
 - name: cloud.google.com/go
   version: 3b1ae45394a234c385be014e9a488f2bb6eef821