chrony: Initial version of role

roles/chrony/templates/chrony.conf.j2

@@ -0,0 +1,24 @@
+# Remote servers
+{% for server in chrony_servers %}
+server {{ server }} iburst
+{% endfor %}
+
+# Record the rate at which the system clock gains/losses time.
+driftfile /var/lib/chrony/drift
+
+# Allow the system clock to be stepped in the first three updates
+# if its offset is larger than 1 second.
+makestep 1.0 3
+
+# Enable kernel synchronization of the real-time clock (RTC).
+rtcsync
+{% if chrony_allow is defined %}
+
+# Allow NTP client access.
+{%   for allow in chrony_allow %}
+allow {{ allow }}
+{%   endfor %}
+{% endif %}
+
+# Get TAI-UTC offset and leap seconds from the system tz database.
+leapsectz right/UTC