OP#830 add bollean for toggling using lan server

templates/chrony.conf.erb

@@ -69,7 +69,7 @@ server <%= @cy_server_fqdn %> iburst
 # Use public servers from the pool.ntp.org project.
 <% @cy_conf_servers.each do |this_server| -%>
 server <%= this_server %> iburst
-<% end -%>
+<% end end -%>
 
 # Use NTP servers from DHCP.
 sourcedir /run/chrony-dhcp
@@ -85,7 +85,7 @@ makestep 1.0 3
 rtcsync
 
 # Enable hardware timestamping on all interfaces that support it.
-hwtimestamp *
+# hwtimestamp *
 
 # Increase the minimum number of selectable sources required to adjust
 # the system clock. Primarily for servers.