[MIXLIB-6] Use conditional to determine whether to use /tmp or /bin as a cwd for the test.
[MIXLIB-6] Use conditional to determine whether to use /tmp or /bin as a cwd for the test.

docwhat/mixlib-shellout,chef/mixlib-shellout,BackSlasher/mixlib-shellout,juliandunn/mixlib-shellout,docwhat/mixlib-shellout,juliandunn/mixlib-shellout,chef/mixlib-shellout,BackSlasher/mixlib-shellout