re-introduce into_repo to avoid breaking current travis builds
re-introduce into_repo to avoid breaking current travis builds

We can delete it later, after we update all the travis files that were
using it

Signed-off-by: Marcello Seri <34fd14c67154e888f6587d5c0e7eadd13aaf7ca7@citrix.com>

gaborigloi/xs-opam,mseri/xs-opam,lindig/xs-opam,mseri/xs-opam,xapi-project/xs-opam