Adjust aws test : actual volume name is set as tag, previously was key

Signed-off-by: Guillaume Tardif <[email protected]>

ecs/testdata/simple/simple-cloudformation-conversion.golden

@@ -30,7 +30,7 @@ Resources:
       - Key: com.docker.compose.project
         Value: TestSimpleConvert
       - Key: com.docker.compose.network
-        Value: default
+        Value: TestSimpleConvert_default
       VpcId: vpc-123
     Type: AWS::EC2::SecurityGroup
   DefaultNetworkIngress: