move copycat version property to root pom

Change-Id: I2422e67b077e2fbd5a6b51b35f41abe7b4287414

@@ -31,10 +31,6 @@
 
     <description>ONOS Gossip based distributed store subsystems</description>
 
-    <properties>
-        <copycat.version>0.4.0-SNAPSHOT</copycat.version>
-    </properties>
-
     <dependencies>
         <dependency>
             <groupId>org.onlab.onos</groupId>

@@ -40,6 +40,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <netty4.version>4.0.23.Final</netty4.version>
+        <copycat.version>0.4.0-SNAPSHOT</copycat.version>
     </properties>
 
     <repositories>

@@ -31,11 +31,6 @@
 
   <description>ONLab third-party dependencies</description>
 
-  <!-- TODO move to root pom? -->
-  <properties>
-      <copycat.version>0.4.0-SNAPSHOT</copycat.version>
-  </properties>
-
   <dependencies>
     <dependency>
       <groupId>com.googlecode.concurrent-trees</groupId>