Bumping ONOS dependency on onos-yang-tools version 1.12.0-b7.

Change-Id: Ib1e23c148a7760d86a5bb83b5ad8f39998e42813
diff --git a/lib/deps.json b/lib/deps.json
index 765e534..753f5e6 100644
--- a/lib/deps.json
+++ b/lib/deps.json
@@ -213,12 +213,12 @@
     "onos-yang-datamodel": "mvn:org.onosproject:onos-yang-datamodel:1.11",
     "onos-yang-maven-plugin": "mvn:org.onosproject:onos-yang-maven-plugin:1.11",
     "onos-yang-utils-generator": "mvn:org.onosproject:onos-yang-utils-generator:1.11",
-    "onos-yang-model":"mvn:org.onosproject:onos-yang-model:1.12.0-b6",
-    "onos-yang-compiler-api":"mvn:org.onosproject:onos-yang-compiler-api:1.12.0-b6",
-    "onos-yang-runtime":"mvn:org.onosproject:onos-yang-runtime:1.12.0-b6",
-    "onos-yang-serializers-json":"mvn:org.onosproject:onos-yang-serializers-json:1.12.0-b6",
-    "onos-yang-serializers-xml":"mvn:org.onosproject:onos-yang-serializers-xml:1.12.0-b6",
-    "onos-yang-serializers-utils":"mvn:org.onosproject:onos-yang-serializers-utils:1.12.0-b6",
+    "onos-yang-model":"mvn:org.onosproject:onos-yang-model:1.12.0-b7",
+    "onos-yang-compiler-api":"mvn:org.onosproject:onos-yang-compiler-api:1.12.0-b7",
+    "onos-yang-runtime":"mvn:org.onosproject:onos-yang-runtime:1.12.0-b7",
+    "onos-yang-serializers-json":"mvn:org.onosproject:onos-yang-serializers-json:1.12.0-b7",
+    "onos-yang-serializers-xml":"mvn:org.onosproject:onos-yang-serializers-xml:1.12.0-b7",
+    "onos-yang-serializers-utils":"mvn:org.onosproject:onos-yang-serializers-utils:1.12.0-b7",
     "org.apache.servicemix.bundles.dom4j":"mvn:org.apache.servicemix.bundles:org.apache.servicemix.bundles.dom4j:1.6.1_5",
     "openflowj-3.0": {
       "uri": "mvn:org.projectfloodlight:openflowj:3.0.0-SNAPSHOT",