The config variable branch.<branchname>.rebase is not only used by `git
pull`, but also by `git remote` when showing details about a remote.
Therefore, it needs to be taught to accept the newly-introduced
`interactive` value of said variable.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>