Install Shibboleth SP with libcurl4

[Peter Schober]

* Etienne Dysli Metref <etienne.dysli-metref at switch.ch> [2018-07-16 16:36]:
> > https://www.switch.ch/aai/guides/sp/installation/?os=ubuntu
> 
> We've now put up a warning about that conflict in this guide.

Thanks, also for the link to
https://depts.washington.edu/bitblog/2018/06/libcurl3-libcurl4-shibboleth-php-curl-ubuntu-18-04/
too bad noone bothered to share this with this community here.
-peter