Using sadis:3.1.0 version

Change-Id: Ib678a1cc2bb9ac70b4a50df306f63d3bb02a8e56
diff --git a/api/pom.xml b/api/pom.xml
index f6d0f9e..a447c82 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -33,7 +33,7 @@
 
     <description>OLT application API</description>
     <properties>
-        <sadis.api.version>3.0.0</sadis.api.version>
+        <sadis.api.version>3.1.0</sadis.api.version>
     </properties>
 
     <dependencies>