Add classes for overriding NTP settings

Change-Id: I316de9061b3701f908a73cfbb0aadd97e9b0c7d3
diff --git "a/\173\173 cookiecutter._env_name \175\175/override_ntp_local.yml" "b/\173\173 cookiecutter._env_name \175\175/override_ntp_local.yml"
new file mode 100644
index 0000000..e5e66a5
--- /dev/null
+++ "b/\173\173 cookiecutter._env_name \175\175/override_ntp_local.yml"
@@ -0,0 +1,9 @@
+# NTP server settings for system clock time source
+parameters:
+  ntp:
+    client:
+      enabled: false
+    server:
+      enabled: true
+      strata:
+        - 127.127.1.0