Input enter in user anwser is equivalent to pressing n.

Bug: 123050795
Test: $atest acloud_test &&
uninstall ssvnc then run $acloud create

Change-Id: Ied142a8ca082629640971e6198fbaea3922787fd
diff --git a/setup/gcp_setup_runner.py b/setup/gcp_setup_runner.py
index 697c4ba..fa0f542 100644
--- a/setup/gcp_setup_runner.py
+++ b/setup/gcp_setup_runner.py
@@ -262,7 +262,7 @@
             "Your default Project/Zone settings are:\n"
             "project:[%s]\n"
             "zone:[%s]\n"
-            "Would you like to update them? [y/n]\n") % (self.project, self.zone)
+            "Would you like to update them?[y/N]: \n") % (self.project, self.zone)
 
         if not self.project or not self.zone:
             logger.info("Project or zone is empty. Start to run setup process.")