Fix bash on freebsd
Fix bash on freebsd

FreeBSD can build bash with the race condition patch but
it doesn't work properly.
Things like command substitution will throw syntax errors even
though the syntax is correct.

Signed-off-by: Jeremiah Snapp <a9df78b4b5c00745f26b0821b2cc57336a474862@chef.io>

chef/omnibus-software,chef/omnibus-software,chef/omnibus-software,chef/omnibus-software,chef/omnibus-software,chef/omnibus-software