use flanneld sysconfig for etcd url

fragments/configure-flannel.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 . /etc/sysconfig/heat-params
+. /etc/sysconfig/flanneld
 
 if [ "$FLANNEL_USE_VXLAN" == "true" ]; then
 	use_vxlan=1
@@ -19,15 +20,14 @@ cat > /etc/sysconfig/flannel-network.json <<EOF
 EOF
 
 # wait for etcd to become active (we will need it to push the flanneld config)
-while ! curl -sf http://localhost:4001/v2/keys/; do
+while ! curl -sf -o /dev/null $FLANNEL_ETCD/v2/keys/; do
   echo "waiting for etcd"
   sleep 1
 done
 
 # put the flannel config in etcd
 echo "creating flanneld config in etcd"
-curl -sf -L http://localhost:4001/v2/keys/coreos.com/network/config \
+curl -sf -L $FLANNEL_ETCD/v2/keys/coreos.com/network/config \
   -X PUT \
   --data-urlencode value@/etc/sysconfig/flannel-network.json
 
-