Using sadis:3.1.0 version

Change-Id: Ib678a1cc2bb9ac70b4a50df306f63d3bb02a8e56
diff --git a/app/pom.xml b/app/pom.xml
index 0ee82ff..1b71d17 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -45,7 +45,7 @@
         <onos.app.readme>CORD OLT Access management application</onos.app.readme>
         <api.package>org.opencord.olt.rest</api.package>
         <olt.api.version>${project.version}</olt.api.version>
-        <sadis.api.version>3.0.0</sadis.api.version>
+        <sadis.api.version>3.1.0</sadis.api.version>
     </properties>
 
     <dependencies>