Tagging 1.2.0-rc1

Change-Id: I2791aacb0ab4eb0d3db92fef5e58e9c62747bf8c
diff --git a/core/pom.xml b/core/pom.xml
index 56dc848..632f69b 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos</artifactId>
-        <version>1.2.0-SNAPSHOT</version>
+        <version>1.2.0-rc1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>