[ci/cd] Upgrade to Xenial

jhunt · jhunt · commit b60726a9215d · 2019-08-08T16:29:59.000-04:00
diff --git a/ci/manifest.yml b/ci/manifest.yml
@@ -81,7 +81,7 @@ update:
 
 stemcells:
   - alias: default
-    os: ubuntu-trusty
+    os: ubuntu-xenial
     version: latest
 
 releases:
