Updating Sadis to latest snapshot to avoid runtime issues

Change-Id: I152350756ba9c64b183f9e1f347d3ff3db6734a7
diff --git a/pom.xml b/pom.xml
index 68c0157..f53f229 100755
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
     <url>http://opencord.org</url>
 
     <properties>
-        <sadis.api.version>5.5.1</sadis.api.version>
+        <sadis.api.version>5.6.0-SNAPSHOT</sadis.api.version>
         <dhcpl2relay.api.version>2.7.0-SNAPSHOT</dhcpl2relay.api.version>
     </properties>