Correctly kill nova-network forked dnsmasq processes

Nova-network OCF script tries to stop dnsmasq processes that might be
left after nova-network abnormal termination.  It must do that to
prevent appearence of two gateways and two DHCP servers in VM network.
Right now script stops *all* dnsmasq processes it finds, but this way it
kills dnsmasq processes that serves as upstream DNS server, which is
managed by 'p_dns' pacemaker resource.  Deadlock appears when
'p_vcenter_nova_network' resource tries to stop dnsmasq and 'p_dns'
starts it again.

Lets just find dnsmasq PIDs that were started by nova-network and
terminate them.

Change-Id: I4ec7a60e31a0ce02c1924e6294aa767ad840617d
Closes-bug: #1458821

deployment/puppet/vmware/files/ocf/nova-network

@@ -241,8 +241,8 @@ nova_network_cleanup() {
     fi
 
     count=0
-    alive=1
-    dnsmasq_pids=$(pgrep dnsmasq)
+    alive=$(ls /var/lib/nova/networks/*.pid | wc -l)
+    dnsmasq_pids=$(cat /var/lib/nova/networks/*.pid)
     while [ $alive -gt 0 ] && [ $count -lt $shutdown_timeout ]; do
         ocf_run kill -s TERM $dnsmasq_pids
 
@@ -265,11 +265,10 @@ nova_network_cleanup() {
 
         if [ $alive -gt 0 ] ; then
             dnsmasq_pids=$np
+            ocf_log debug "dnsmasq processes started by nova-network still hasn't stopped yet. Waiting ..."
         fi
 
         ((count+=$iteration_time))
-
-        ocf_log debug "dnsmasq processes started by nova-network still hasn't stopped yet. Waiting ..."
     done
 
     if [ $alive -gt 0 ] ; then