[COOK-3015] Fixed minitest issue.

The "pending" statement in `files/default/tests/minitest/default_test.rb` was causing errors for us (see below).  I have commented it out for the meantime, and fixed a few whitespace anomalies.

```
  1) Error:
yum::default#test_0001_Default recipe does nothing, so default_test does nothing:
NameError: undefined local variable or method `pending' for #<#<Class:0x00000001dd3960>:0x00000002439660>
    /var/chef/minitest/yum/default_test.rb:26:in `block (2 levels) in <top (required)>'
```