Quagga: Use bgp keepalive and holdtime timers from configdb (#1661)

Author: pavel-shirshov

dockers/docker-fpm-quagga/bgpd.conf.j2

@@ -64,6 +64,11 @@ router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
 {% if bgp_session['asn'] | int != 0 %}
   neighbor {{ neighbor_addr }} remote-as {{ bgp_session['asn'] }}
   neighbor {{ neighbor_addr }} description {{ bgp_session['name'] }}
+{# set the bgp neighbor timers if they have not default values #}
+{% if     (bgp_session['keepalive'] is defined and bgp_session['keepalive'] | int != 60)
+      or  (bgp_session['holdtime'] is defined  and bgp_session['holdtime']  | int != 180) %}
+  neighbor {{ neighbor_addr }} timers {{ bgp_session['keepalive'] }} {{ bgp_session['holdtime'] }}
+{% endif %}
 {% if bgp_session.has_key('admin_status') and bgp_session['admin_status'] == 'down' or not bgp_session.has_key('admin_status') and DEVICE_METADATA['localhost'].has_key('default_bgp_status') and DEVICE_METADATA['localhost']['default_bgp_status'] == 'down' %}
   neighbor {{ neighbor_addr }} shutdown
 {% endif %}