Increment snapshot version

Change from 1.5.0-SNAPSHOT to 1.6.0-SNAPSHOT to prepare
for next development cycle.

Change-Id: I187785ab4b11a37815289d20ba802c48e86cee7f
Signed-off-by: Patrick Brady <patrick.brady@att.com>
Issue-ID: APPC-1585
diff --git a/appc-directed-graph/appc-dgraph/pom.xml b/appc-directed-graph/appc-dgraph/pom.xml
index 439eb60..a1a5389 100644
--- a/appc-directed-graph/appc-dgraph/pom.xml
+++ b/appc-directed-graph/appc-dgraph/pom.xml
@@ -28,14 +28,14 @@
     <parent>
         <groupId>org.onap.appc</groupId>
         <artifactId>appc-directed-graph</artifactId>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.6.0-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
     <groupId>org.onap.appc</groupId>
     <artifactId>appc-dgraph</artifactId>
-    <version>1.5.0-SNAPSHOT</version>
+    <version>1.6.0-SNAPSHOT</version>
 
     <name>APPC Directed Graph</name>
     <description>APPC DG Module</description>