Mark android call on hold when use hold the call

Author: manuquentin

android/src/main/java/io/wazo/callkeep/VoiceConnectionService.java

@@ -155,13 +155,15 @@ public void onAbort() {
             @Override
             public void onHold() {
                 super.onHold();
+                connection.setOnHold();
 
                 sendCallRequestToActivity(ACTION_HOLD_CALL, null);
             }
 
             @Override
             public void onUnhold() {
                 super.onUnhold();
+                connection.setActive();
 
                 sendCallRequestToActivity(ACTION_UNHOLD_CALL, null);
             }