CONTRIB: Add vi file extensions to .gitignore

*.swp and *.swo file extensions are used by vi. Very annoying to not have them
ignored by git.

(cherry picked from commit 64d0ed515b10068dc21ac954fd2868d7f5d0e820)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed