[spec] fix upstream URLs to point to https and official release repo

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1708616

also to be noted, the Source0: line is different from upstream and Fedora
because upstream can handle tarballs during development

Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>

kronosnet.spec.in

@@ -90,8 +90,8 @@ Version: @version@
 Release: 1%{?numcomm:.%{numcomm}}%{?alphatag:.%{alphatag}}%{?dirty:.%{dirty}}%{?dist}
 License: GPLv2+ and LGPLv2+
 Group: System Environment/Base
-URL: https://github.com/kronosnet/kronosnet/
-Source0: https://github.com/kronosnet/kronosnet/archive/%{name}-%{version}%{?numcomm:.%{numcomm}}%{?alphatag:-%{alphatag}}%{?dirty:-%{dirty}}.tar.gz
+URL: https://kronosnet.org
+Source0: https://kronosnet.org/releases/%{name}-%{version}%{?numcomm:.%{numcomm}}%{?alphatag:-%{alphatag}}%{?dirty:-%{dirty}}.tar.gz
 
 ## Setup/build bits