[FAB-3161] Enhance cluster-creation reporting

It will likely be helpful to the user to display a more
obvious "success" message along with key details about
the created cluster (such as IP addresses).

This patch adds the following report:
========================================================================
Cluster ready!
========================================================================

172.18.0.2 ca
172.18.0.3 orderer
172.18.0.4 peer1
172.18.0.5 peer2
172.18.0.6 peer3
172.18.0.7 peer4

Change-Id: I8228b0d439ec5bd71f5ddb0774888b02b978955a
Signed-off-by: Gregory Haskins <gregory.haskins@gmail.com>

examples/cluster/Makefile

@@ -41,8 +41,10 @@ help:
 	@cat usage.txt
 
 compose-up: nodes
+	@echo "Booting docker-compose environment"
 	$(COMPOSE) up -d ca $(PEERS)
 	$(DRUN) ./configure.sh $(CHANNEL_NAME) "$(CHANNEL_TXNS)" "$(PEERS)" $(TLS)
+	@./compose/report-env.sh "$(filter-out cli,$(NODES)")
 
 compose-down:
 	$(COMPOSE) down

examples/cluster/compose/report-env.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+NODES=$1
+
+getip() {
+    HOST=$1
+
+    docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $HOST
+}
+
+generate_hosts() {
+    for NODE in $NODES; do
+        echo "$(getip $NODE) $NODE"
+    done
+}
+
+echo "========================================================================"
+echo "Cluster ready!"
+echo "========================================================================"
+echo
+generate_hosts | sort