This patch adds support to the Swagger-UI. It does so by adding
reference to the Swagger-UI target directory, after applying this patch
/ui/ will display the Swagger-UI page with the available APIs.
From the Swagger-UI page it is possible to run the different APIs.
The target directory of the ui can be override from the command line.
Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>