Add fitbit_internal permission

[StefanRM]

Add fitbit_internal permission, allowing apps to use
internal SDK APIs.

Signed-off-by: Stefan Maftei smaftei@google.com

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[coveralls]

Coverage increased (+0.01%) to 72.917% when pulling 1d9b926 on smaftei/add-fitbit-internal-permission into 2b62a4c on master.

[google-cla]

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[google-cla]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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