seleniumserver: Be catch-all on the frontend

The IP used by frontend can be different than the real endpoint, and unknown
for the frontend itself, so make it catch-all to allow access.

/reviewed-on nexedi/slapos!497

software/seleniumserver/buildout.hash.cfg

@@ -19,4 +19,4 @@ md5sum = c4ac5de141ae6a64848309af03e51d88
 
 [template-selenium]
 filename = instance-selenium.cfg.in
-md5sum = 8e6b9629c1489559ec88a67d7b1bdf41
+md5sum = fe248a36cd1908fb04b2cbb334c878ff

software/seleniumserver/instance-selenium.cfg.in

@@ -114,8 +114,10 @@ bytes = 12
 [selenium-server-frontend-config]
 recipe = slapos.recipe.template:jinja2
 rendered = $${directory:etc}/$${:_buildout_section_name_}
+# Catch-all simple frontend, as it can serve on different interface then accessed one, by
+# using "*" as hostname
 template = inline:
-  https://$${:hostname}:$${:port} {
+  https://*:$${:port} {
     bind $${:ip}
     tls self_signed # TODO
     proxy / $${selenium-server-hub-instance:base-url} {