Only reconfigure bid on some actions

agg-set-space-bird-config and agg-remove-space-bird-config don't need to
restart all of yap to apply their changes, so just update the files and
reconfigure bird instead to save on some outage time.

DEV-2446

salt/yap/aggregator/yap.service

@@ -8,6 +8,7 @@ Type=oneshot
 RemainAfterExit=true
 ExecStart=/usr/local/bin/yap start-all
 ExecStop=/usr/local/bin/yap stop-all
+ExecReload=/usr/local/bin/yap reload
 
 [Install]
 WantedBy=multi-user.target

salt/yap/aggregator/yap_aggregator

@@ -224,6 +224,11 @@ function stop_all() {
 }
 
 
+function reload() {
+    echo 'configure soft' | pwanbirdc
+}
+
+
 function restart_all() {
     for name in "${!SPACES[@]}" ; do
         stop $name
@@ -328,6 +333,9 @@ case "$action" in
         stop $2
         start $2
         ;;
+    reload)
+        reload
+        ;;
     status)
         status $2
         ;;

yap

@@ -838,7 +838,7 @@ function aggregator_set_space_bird_config() {
     set_var_from_file "/aggregators/$aggregator/spaces/$space/bird_config" $file
 
     salt_update node-$aggregator ||:
-    salt_exec node-$aggregator service.restart yap ||:
+    salt_exec node-$aggregator service.reload yap ||:
 
     aggregator_show $aggregator
 }
@@ -856,7 +856,7 @@ function aggregator_remove_space_bird_config() {
     del_var "/aggregators/$aggregator/spaces/$space/bird_config"
 
     salt_update node-$aggregator ||:
-    salt_exec node-$aggregator service.restart yap ||:
+    salt_exec node-$aggregator service.reload yap ||:
 
     aggregator_show $aggregator
 }