tr181-rest-api: import packages from feed-prpl
In an attempt to align the webui/rest-api configuration inside SAH and prpl, SAH should start using the tr181-rest-api to configure their boards. This commit imports the tr181-rest-api package as it is now available in feed-prpl.
Signed-off-by: Matthias FRANCK matthias.franck_ext@softathome.com