OBS SSO implementation

This is work in progress, see https://phabricator.apertis.org/T7891.

debian/control

@@ -31,6 +31,7 @@ Build-Depends: debhelper (>= 9),
                ruby-erubis,
                ruby-escape-utils,
                ruby-execjs,
+               ruby-faraday,
                ruby-flot-rails,
                ruby-font-awesome-rails,
                ruby-haml,
@@ -173,6 +174,7 @@ Depends: apache2,
          ruby-erubis,
          ruby-escape-utils,
          ruby-execjs,
+         ruby-faraday,
          ruby-flot-rails,
          ruby-font-awesome-rails,
          ruby-haml,