Use addon-repositories instead of addon-svn

addon-repositories (https://github.com/finnlabs/addon-repositories)
provides integration of both Git and Subversion for Packager
using the 5.0 managed repositories API.

.pkgr.yml

@@ -31,7 +31,7 @@ wizards:
   - https://github.com/pkgr/addon-legacy-installer.git
   - https://github.com/pkgr/addon-mysql.git
   - https://github.com/pkgr/addon-apache2.git
-  - https://github.com/pkgr/addon-svn-dav.git
+  - https://github.com/finnlabs/addon-repositories.git
   - https://github.com/pkgr/addon-smtp.git
   - https://github.com/pkgr/addon-memcached.git
   - https://github.com/pkgr/addon-openproject.git