Moving Sadis dependency to released 3.1.1 version

Change-Id: I8b0709736efb03bb5d69f199aff465c160e64584
diff --git a/pom.xml b/pom.xml
index 2d722a6..e09c750 100755
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
         <onos.app.requires>
             org.opencord.sadis
         </onos.app.requires>
-        <sadis.api.version>3.1.1-SNAPSHOT</sadis.api.version>
+        <sadis.api.version>3.1.1</sadis.api.version>
     </properties>
 
     <modules>