add ntp server support (#2)

diff --git a/tests/pillar/server.sls b/tests/pillar/server.sls
new file mode 100644
index 0000000..25e78b2
--- /dev/null
+++ b/tests/pillar/server.sls
@@ -0,0 +1,14 @@
+ntp:
+  client:
+    enabled: true
+    strata:
+    - ntp.cesnet.cz
+    - pool.ntp.org
+  server:
+    enabled: true
+    restrict:
+      - subnet: 192.168.0.1
+        mask: 255.255.255.0
+      - subnet: 172.16.1.1
+        mask: 255.255.0.0
+