Fixing regions command to list devices that are currently in the region.

Change-Id: I52098fb613844b786827f7bc97e7ecec581397ba
diff --git a/cli/src/main/java/org/onosproject/cli/net/RegionListCommand.java b/cli/src/main/java/org/onosproject/cli/net/RegionListCommand.java
index 019bb07..9c3910c 100644
--- a/cli/src/main/java/org/onosproject/cli/net/RegionListCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/RegionListCommand.java
@@ -42,10 +42,11 @@
             required = false, multiValued = false)
     String id = null;
 
+    private RegionService regionService;
+
     @Override
     protected void execute() {
-        RegionService regionService = get(RegionService.class);
-
+        regionService = get(RegionService.class);
         if (id == null) {
             for (Region region : getSortedRegions(regionService)) {
                 printRegion(region);
@@ -76,5 +77,6 @@
     private void printRegion(Region region) {
         print(FMT, region.id(), region.name(), region.type());
         region.masters().forEach(m -> print(FMT_MASTER, m));
+        regionService.getRegionDevices(region.id()).forEach(id -> print("  %s", id));
     }
 }
diff --git a/tools/test/topos/regions-topo-2 b/tools/test/topos/regions-topo-2
new file mode 100755
index 0000000..bf380ef
--- /dev/null
+++ b/tools/test/topos/regions-topo-2
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+host=${1:-127.0.0.1}
+
+onos ${host} null-simulation stop custom
+onos ${host} wipe-out please
+onos ${host} null-simulation start custom
+
+sleep 1
+
+onos ${host} <<-EOF
+
+null-create-device switch s1 10 0 0
+null-create-device switch s2 10 0 0
+null-create-device switch s3 10 0 0
+null-create-device switch s4 10 0 0
+null-create-device switch s5 10 0 0
+null-create-device switch s6 10 0 0
+null-create-device switch s7 10 0 0
+null-create-device switch s8 10 0 0
+null-create-device switch s9 10 0 0
+# null-create-device switch s10 10 0 0
+
+null-create-link direct s1 s2
+null-create-link direct s2 s3
+null-create-link direct s2 s4
+null-create-link direct s3 s4
+null-create-link direct s3 s5
+null-create-link direct s6 s5
+null-create-link direct s6 s8
+null-create-link direct s7 s9
+null-create-link direct s8 s9
+null-create-link direct s5 s7
+null-create-link direct s8 s7
+
+EOF
+
+
+
+onos ${host} <<-EOF
+
+region-add r1 Region1 METRO ${host}
+region-add r2 Region2 METRO ${host}
+region-add r3 Region3 CAMPUS ${host}
+
+region-add-devices r1 \
+    of:0000000000000002 \
+    of:0000000000000003 \
+    of:0000000000000004
+
+region-add-devices r2 \
+    of:0000000000000005 \
+    of:0000000000000006
+
+region-add-devices r3 \
+    of:0000000000000007 \
+    of:0000000000000008 \
+    of:0000000000000009
+
+regions
+EOF
\ No newline at end of file