add git config --global core.autocrlf check

core.autocrlf was added to install guide in https://github.com/gitlabhq/gitlabhq/commit/2d681c0d1ed14bf23c041aa04fa3e77caceda9a1 but not added to check script
Merge pull request #7441 from bbodenmiller/patch-7

add git config --global core.autocrlf check