Make default hydra url consistent with other default values

test/login_logout/Dockerfile

@@ -7,9 +7,9 @@ RUN pip3 install --no-cache-dir -r requirements.txt
 
 COPY . .
 
-ENV BASE_URL https://hydra.oas.example.net
-ENV ACCESS_TOKEN_URL https://hydra.oas.example.net/oauth2/token
-ENV AUTHORIZE_URL https://hydra.oas.example.net/oauth2/auth
+ENV BASE_URL https://sso.oas.example.net
+ENV ACCESS_TOKEN_URL https://sso.oas.example.net/oauth2/token
+ENV AUTHORIZE_URL https://sso.oas.example.net/oauth2/auth
 ENV KEY testapp
 ENV SECRET verysecret