Bump ONOS to 2.2 and build with Java 11

Change-Id: I5300cecdaa991a9e238114d7cc47b2094835025a
diff --git a/app/src/main/java/org/opencord/aaa/impl/StateMachine.java b/app/src/main/java/org/opencord/aaa/impl/StateMachine.java
index 0b60c2e..9086846 100644
--- a/app/src/main/java/org/opencord/aaa/impl/StateMachine.java
+++ b/app/src/main/java/org/opencord/aaa/impl/StateMachine.java
@@ -32,7 +32,7 @@
  * AAA Finite State Machine.
  */
 
-class StateMachine {
+public class StateMachine {
     //INDEX to identify the state in the transition table
     static final int STATE_IDLE = 0;
     static final int STATE_STARTED = 1;
@@ -347,7 +347,7 @@
      *
      * @return The username.
      */
-    protected byte[] username() {
+    public byte[] username() {
         return this.username;
     }