t0008: don't rely on default ".git/info/exclude"
Change a test added in 368aa52952d (add git-check-ignore sub-command, 2013-01-06) to clobber .git/info/exclude rather than append to it. These tests would break if the "templates/info--exclude" file added in d3af621b147 (Redo the templates generation and installation., 2005-08-06) wasn't exactly 6 lines (of only comments). Let's instead clobber the default .git/info/excludes file, and test only our own expected content. This is not strictly needed for anything in this series, but is a good cleanup while we're at it. As discussed in the preceding commit a lot of things depend on the "info" directory being created, but this was the only test that relied on the specific content in the "templates/info--exclude" file. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>