[RSPEC] Refactored spec for #format_for_exception
[RSPEC] Refactored spec for #format_for_exception

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