Bluetooth: deploy pip with apt and update setuptools

The original way to deploy pip, manual install of dependency, and
bootstrap script, are outdated. Pip is now fully supported with apt.
Update to use apt for pip installment to provide more consistent
behavior. And update to use the latest Python setuptools.

TEST=make remote-install no error on newly flashed Pi

Change-Id: I2b38fffa1512cdc821166bed4e6384cb51edfc8e
Auto-Submit: Michael Sun <>
Reviewed-by: En-Shuo Hsu <>
Reviewed-by: Daniel Winkler <>
Commit-Queue: Michael Sun <>
Tested-by: Michael Sun <>
6 files changed