control: Update metadata

debian/control

 Source: icinga2
 Section: admin
-Priority: extra
+Priority: optional
 Maintainer: Icinga Development Team <info@icinga.com>
 Build-Depends:
   bash-completion,
@@ -29,9 +29,9 @@ Build-Depends:
   make (>= 3.81),
   po-debconf
 Standards-Version: 3.9.8
-Homepage: http://www.icinga.org
-Vcs-Browser: https://anonscm.debian.org/cgit/pkg-nagios/pkg-icinga2.git
-Vcs-Git: https://anonscm.debian.org/git/pkg-nagios/pkg-icinga2.git
+Homepage: https://www.icinga.com
+Vcs-Browser: https://git.icinga.com/packaging/deb-icinga2
+Vcs-Git: https://git.icinga.com/packaging/deb-icinga2.git
 
 Package: icinga2
 Architecture: any