Updating the app to depend on ONOS 2.5.5 APIs and sadis version 5.5.1

Change-Id: Ie93c7d0adbf5c149de240a84f51bd871a5c29f46
diff --git a/pom.xml b/pom.xml
index 2e4d849..1dfa9fd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-dependencies</artifactId>
-        <version>2.5.2</version>
+        <version>2.5.5</version>
     </parent>
 
     <groupId>org.opencord</groupId>
@@ -33,7 +33,7 @@
     <description>CORD Multicast application</description>
 
     <properties>
-        <sadis.api.version>5.4.0</sadis.api.version>
+        <sadis.api.version>5.5.1</sadis.api.version>
         <mcast.api.version>2.5.0-SNAPSHOT</mcast.api.version>
     </properties>