Updating version to 1.7.0-rc3 for the RC

Change-Id: Id6255010c0edb17eae24c2ed5aabb02cdfa7a33a
diff --git a/providers/openflow/app/pom.xml b/providers/openflow/app/pom.xml
index a9ce4c2..9dd465f 100644
--- a/providers/openflow/app/pom.xml
+++ b/providers/openflow/app/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-of-providers</artifactId>
-        <version>1.7.0-SNAPSHOT</version>
+        <version>1.7.0-rc3</version>
     </parent>
 
     <artifactId>onos-openflow</artifactId>