Tagging 1.4.0-rc1

Change-Id: Idec5c65021283fa03a8f2530aebba968a5451d8b
diff --git a/incubator/rpc-grpc/pom.xml b/incubator/rpc-grpc/pom.xml
index 367b50a..e2d16ae 100644
--- a/incubator/rpc-grpc/pom.xml
+++ b/incubator/rpc-grpc/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <artifactId>onos-incubator</artifactId>
         <groupId>org.onosproject</groupId>
-        <version>1.4.0-SNAPSHOT</version>
+        <version>1.4.0-rc1</version>
     </parent>
 
     <artifactId>onos-incubator-rpc-grpc</artifactId>