fix(sprig): Update to v2.14.1 that fixes an issue

There was an issue with functions not being able to pass to each
other. For example, the output of regex not being able to be
passed to first or last due to type issues. This update fixes
those problems

glide.lock

@@ -1,5 +1,5 @@
-hash: 3d0ff2a6cf119f719abbd2606da14a00073627972be81a6e68404ad92c2d4cd5
-updated: 2017-11-04T13:04:46.410949815+01:00
+hash: cdacf92805a7371d74694ab6a82d7475639e4b20113ff3bca961f42b6554cbb0
+updated: 2017-12-01T15:12:23.724268985-05:00
 imports:
 - name: cloud.google.com/go
   version: 3b1ae45394a234c385be014e9a488f2bb6eef821
@@ -189,7 +189,7 @@ imports:
 - name: github.com/Masterminds/semver
   version: 517734cc7d6470c0d07130e40fd40bdeb9bcd3fd
 - name: github.com/Masterminds/sprig
-  version: efda631a76d70875162cdc25ffa0d0164bf69758
+  version: b217b9c388de2cacde4354c536e520c52c055563
 - name: github.com/Masterminds/vcs
   version: 3084677c2c188840777bff30054f2b553729d329
 - name: github.com/mattn/go-runewidth

glide.yaml

@@ -14,7 +14,7 @@ import:
 - package: github.com/imdario/mergo
   version: 6633656539c1639d9d78127b7d47c622b5d7b6dc
 - package: github.com/Masterminds/sprig
-  version: ^2.14
+  version: ^2.14.1
 - package: github.com/ghodss/yaml
 - package: github.com/Masterminds/semver
   version: ~1.3.1