Releasing voltha-onos with updated apps and ONOS 2.2.8 for VOLTHA 2.7

Change-Id: Ic3291db86fee2ae8deec37d48db0b2737fc74f9c
diff --git a/dependencies.xml b/dependencies.xml
index 2d89b8e..8cbb595 100644
--- a/dependencies.xml
+++ b/dependencies.xml
@@ -24,13 +24,13 @@
     <version>fake</version>
 
     <properties>
-        <olt.version>4.4.0-SNAPSHOT</olt.version>
-        <sadis.version>5.3.0-SNAPSHOT</sadis.version>
-        <aaa.version>2.3.0-SNAPSHOT</aaa.version>
-        <dhcpl2relay.version>2.4.0-SNAPSHOT</dhcpl2relay.version>
-        <kafka.version>2.6.0-SNAPSHOT</kafka.version>
-        <igmpproxy.version>2.2.0-SNAPSHOT</igmpproxy.version>
-        <mcast.version>2.2.0-SNAPSHOT</mcast.version>
+        <olt.version>4.4.0</olt.version>
+        <sadis.version>5.3.0</sadis.version>
+        <aaa.version>2.3.0</aaa.version>
+        <dhcpl2relay.version>2.4.0</dhcpl2relay.version>
+        <kafka.version>2.6.0</kafka.version>
+        <igmpproxy.version>2.2.0</igmpproxy.version>
+        <mcast.version>2.3.2</mcast.version>
     </properties>
 
     <build>