test: moved to tools

Moved the current test folder to tools and started a new test
folder. This will allow for rapid introduction of new unit-tests into
phosphor-hwmon. The tools f

test: moved to tools

Moved the current test folder to tools and started a new test
folder. This will allow for rapid introduction of new unit-tests into
phosphor-hwmon. The tools folder contains small tools to aid in
phosphor-hwmon configuration and misc. This folder will go under review
at another time.

Change-Id: Ice18ffb5cdcbd519d49088e233a8082a9410b03e
Signed-off-by: Patrick Venture <venture@google.com>

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