Fix name in .kitchen.travis.yml file

Change-Id: I6696a221cf04f1bd5822ce97399c8a585bf03f8e

.kitchen.travis.yml

@@ -3,4 +3,4 @@ suites:
   - name: <%= ENV['SUITE'] %>
     provisioner:
       pillars-from-files:
-        neutron.sls: tests/pillar/<%= ENV['SUITE'] %>.sls
+        linux.sls: tests/pillar/<%= ENV['SUITE'] %>.sls