Mesa (master): travis: enable apt cache

[Emil Velikov]

Module: Mesa
Branch: master
Commit: 486f28ba88259cc70ee59ad67b2b4277b0da0ce4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=486f28ba88259cc70ee59ad67b2b4277b0da0ce4

Author: Emil Velikov <emil.velikov at collabora.com>
Date:   Thu Apr  6 16:36:59 2017 +0100

travis: enable apt cache

Provides a small, but consistent improvement.
Example numbers of the jobs added later in the series.

"make loaders/classic DRI" - 1s
"scons SWR" - 6s

Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
Reviewed-by: Andres Gomez <agomez at igalia.com>

---

 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index e317a02723..061aed1bc7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,7 @@ sudo: false
 dist: trusty
 
 cache:
+  apt: true
   directories:
     - $HOME/.ccache