Fix name in .kitchen.travis.yml file

Change-Id: Ifb665bceb5d710c34476bb42ae65e85103a5f4e5
diff --git a/.kitchen.travis.yml b/.kitchen.travis.yml
index f847543..455c721 100644
--- a/.kitchen.travis.yml
+++ b/.kitchen.travis.yml
@@ -3,4 +3,4 @@
   - name: <%= ENV['SUITE'] %>
     provisioner:
       pillars-from-files:
-        neutron.sls: tests/pillar/<%= ENV['SUITE'] %>.sls
+        prometheus.sls: tests/pillar/<%= ENV['SUITE'] %>.sls