Fix swift log level configuration

Change-Id: I7f980640e75a9328a14a3e14e9c55358955f3182

ansible/roles/swift/defaults/main.yml

@@ -47,7 +47,7 @@ swift_rsyncd_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ do
 swift_rsyncd_tag: "{{ swift_tag }}"
 swift_rsyncd_image_full: "{{ swift_rsyncd_image }}:{{ swift_rsyncd_tag }}"
 
-swift_log_level: "{{ 'INFO' if openstack_logging_debug == 'False' else 'DEBUG'}}"
+swift_log_level: "{{ 'DEBUG' if openstack_logging_debug | bool else 'INFO'}}"
 
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 # OpenStack