ONOS-6259: Topo2 - Implement server-side highlighting model (WIP)
- added locType parameter to region-add command
- created RegionABC sample topology
- fixed possible NPE in Topo2Jsonifier.jsonClosedRegion()
- added "plain" sprite layout
- check for undefined sprite layout and log a warning
- updated logger.sh script
- fixed Topo2Model to have a reference to colleciton before initialization

Change-Id: Ie6af28516338f5d64576bf465373cb5df3dff52c
diff --git a/tools/test/topos/regionabc.sh b/tools/test/topos/regionabc.sh
new file mode 100755
index 0000000..64e205a
--- /dev/null
+++ b/tools/test/topos/regionabc.sh
@@ -0,0 +1,82 @@
+#!/bin/bash
+#
+# A simple test topology of three regions, A, B, and C.
+#
+# Script Configuration:
+#
+# host     : the controller instance against which this script is run
+
+host=${1:-127.0.0.1}
+
+
+###------------------------------------------------------
+### Start by adding the three regions A, B, and C
+
+# region-add <region-id> <region-name> <region-type> \
+#   <lat/Y> <long/X> <locType> <region-master>
+
+onos ${host} <<-EOF
+
+# -- define regions
+region-add rA "Region A" LOGICAL_GROUP 30 20 grid ${host}
+region-add rB "Region B" LOGICAL_GROUP 30 40 grid ${host}
+region-add rC "Region C" LOGICAL_GROUP 30 60 grid ${host}
+
+# -- set peer locations
+region-add-peer-loc rA rB 40 70
+region-add-peer-loc rA rC 50 70
+
+region-add-peer-loc rB rA 30 10
+region-add-peer-loc rB rC 30 70
+
+region-add-peer-loc rC rA 10 10
+region-add-peer-loc rC rB 20 10
+
+EOF
+
+###------------------------------------------------------
+### Add layouts, associating backing regions, and optional parent
+
+# layout-add <layout-id> <bg-ref> \
+#   [ <region-id> <parent-layout-id> <scale> <offset-x> <offset-y> ]
+#
+
+onos ${host} <<-EOF
+
+# -- top level
+layout-add root +plain . . 1.0 0.0 0.0
+
+# -- layouts for top level regions
+layout-add lA +plain rA root 1.0 0.0 0.0
+layout-add lB +plain rB root 1.0 0.0 0.0
+layout-add lC +plain rC root 1.0 0.0 0.0
+
+# -- summary
+layouts
+EOF
+
+###------------------------------------------------------
+### Assign devices to each of their regions
+
+onos ${host} <<-EOF
+
+region-add-devices rA \
+    of:0000000000000001 \
+    of:0000000000000002 \
+
+region-add-devices rB \
+    of:0000000000000003 \
+    of:0000000000000004 \
+
+region-add-devices rC \
+    of:0000000000000005 \
+    of:0000000000000006 \
+
+EOF
+
+###------------------------------------------------------
+### Configure devices and hosts
+
+onos-netcfg ${host} regionabc.json
+
+