travis: use 'sudo make' to fix zsh test
Build: https://travis-ci.org/Tarrasch/zsh-autoenv/jobs/
59762278
Error:
./A04redirect.ztst: starting.
*** /tmp/zsh.ztst.err.16143 Thu Apr 23 18:06:09 2015
--- /tmp/zsh.ztst.terr.16143 Thu Apr 23 18:06:09 2015
***************
*** 1 ****
! zsh:1: no such file or directory: /nonexistent/nonexistent
--- 1 ----
! zsh:1: permission denied: /nonexistent/nonexistent
Test ./A04redirect.ztst failed: error output differs from expected as shown above for:
$ZTST_testdir/../Src/zsh -fc 'exec >/nonexistent/nonexistent
echo output'
Was testing: failed exec redir, no POSIX_BUILTINS