floating_network_name should be in runtest:tempest:network

Change-Id: I588fcbad3480042aabb1dc6bde5fb2e12982936b
diff --git a/metadata/service/tempest/init.yml b/metadata/service/tempest/init.yml
index 2c61d2f..0c75e40 100644
--- a/metadata/service/tempest/init.yml
+++ b/metadata/service/tempest/init.yml
@@ -43,7 +43,6 @@
           image_ref_alt: ${_param:glance_image_cirros_name}
         network:
           public_network_id: ${_param:runtest_tempest_public_net}
-          floating_network_name: ${_param:runtest_tempest_public_net}
       cfg_dir: ${_param:runtest_tempest_cfg_dir}
       cfg_name: ${_param:runtest_tempest_cfg_name}
       DEFAULT:
@@ -54,6 +53,8 @@
         max_microversion: 2.53
       identity:
         disable_ssl_certificate_validation: false
+      network:
+        floating_network_name: ${_param:runtest_tempest_public_net}
       orchestration:
         max_template_size: 5440000
         max_resources_per_stack: 20000