Implement screen process stop() function

Implements screen process stop in ceilometer, cinder, glance, heat, n-vol

Change-Id: Ic5e02926f026d0e6f4b39846bfe77634dd414c60

lib/ceilometer

@@ -72,5 +72,13 @@ function start_ceilometer() {
     screen_it ceilometer-api "cd $CEILOMETER_DIR && $CEILOMETER_BIN_DIR/ceilometer-api -d -v --log-dir=$CEILOMETER_API_LOG_DIR"
 }
 
+# stop_ceilometer() - Stop running processes
+function stop_ceilometer() {
+    # Kill the ceilometer screen windows
+    for serv in ceilometer-acompute ceilometer-acentral ceilometer-collector ceilometer-api; do
+        screen -S $SCREEN_NAME -p $serv -X kill
+    done
+}
+
 # Restore xtrace
 $XTRACE

lib/cinder

@@ -225,9 +225,12 @@ function start_cinder() {
     screen_it c-sch "cd $CINDER_DIR && $CINDER_BIN_DIR/cinder-scheduler --config-file $CINDER_CONF"
 }
 
-# stop_cinder() - Stop running processes (non-screen)
+# stop_cinder() - Stop running processes
 function stop_cinder() {
-    # FIXME(dtroyer): stop only the cinder screen window?
+    # Kill the cinder screen windows
+    for serv in c-api c-sch c-vol; do
+        screen -S $SCREEN_NAME -p $serv -X kill
+    done
 
     if is_service_enabled c-vol; then
         stop_service tgt

lib/glance

@@ -169,7 +169,7 @@ function start_glance() {
     fi
 }
 
-# stop_glance() - Stop running processes (non-screen)
+# stop_glance() - Stop running processes
 function stop_glance() {
     # Kill the Glance screen windows
     screen -S $SCREEN_NAME -p g-api -X kill

lib/heat

@@ -173,10 +173,12 @@ function start_heat() {
     screen_it h-meta "cd $HEAT_DIR; bin/heat-metadata --config-dir=$HEAT_CONF_DIR/heat-metadata.conf"
 }
 
-# stop_heat() - Stop running processes (non-screen)
+# stop_heat() - Stop running processes
 function stop_heat() {
-    # This function intentionally left blank
-    :
+    # Kill the cinder screen windows
+    for serv in h-eng h-api-cfn h-api-cw h-meta; do
+        screen -S $SCREEN_NAME -p $serv -X kill
+    done
 }
 
 # Restore xtrace

lib/n-vol

@@ -114,9 +114,10 @@ function start_nvol() {
     screen_it n-vol "cd $NOVA_DIR && $NOVA_BIN_DIR/nova-volume"
 }
 
-# stop_nvol() - Stop running processes (non-screen)
+# stop_nvol() - Stop running processes
 function stop_nvol() {
-    # FIXME(dtroyer): stop only the n-vol screen window?
+    # Kill the nova volume screen window
+    screen -S $SCREEN_NAME -p n-vol -X kill
 
     stop_service tgt
 }