Show ip address before associating address

In order to see is the instance has a fixed ip at the moment.

Change-Id: I506f2f099a03e8b63f1f2daeb564ed72f1322a68
diff --git a/exercises/euca.sh b/exercises/euca.sh
index 5b0d1ba..b8b283a 100755
--- a/exercises/euca.sh
+++ b/exercises/euca.sh
@@ -129,7 +129,8 @@
     # Allocate floating address
     FLOATING_IP=`euca-allocate-address | cut -f2`
     die_if_not_set $LINENO FLOATING_IP "Failure allocating floating IP"
-
+    # describe all instances at this moment
+    euca-describe-instances
     # Associate floating address
     euca-associate-address -i $INSTANCE $FLOATING_IP || \
         die $LINENO "Failure associating address $FLOATING_IP to $INSTANCE"