update travis script for multi region deployment (ethereum#269)

.travis.yml

@@ -149,8 +149,16 @@ jobs:
       - sleep 20
       - |
         source .env
-        for ((i=0;i<$num_of_nodes;i++)); do
+        for ((i=$us_east_2_start;i<$us_east_2_end;i++)); do
           echo "Force deploy xdc-$i"
-          sleep 5 && aws ecs update-service --region us-east-1 --cluster devnet-xdcnode-cluster --service ecs-service-xdc$i --force-new-deployment;
+          sleep 5 && aws ecs update-service --region us-east-2 --cluster devnet-xdcnode-cluster --service ecs-service-xdc$i --force-new-deployment;
         done
-
+        for ((i=$eu_west_1_start;i<$eu_west_1_end;i++)); do
+          echo "Force deploy xdc-$i"
+          sleep 5 && aws ecs update-service --region eu-west-1 --cluster devnet-xdcnode-cluster --service ecs-service-xdc$i --force-new-deployment;
+        done
+        for ((i=$ap_southeast_2_start;i<$ap_southeast_2_end;i++)); do
+          echo "Force deploy xdc-$i"
+          sleep 5 && aws ecs update-service --region ap-southeast-2 --cluster devnet-xdcnode-cluster --service ecs-service-xdc$i --force-new-deployment;
+        done
+