Fix info logging when installing pip.
Silence initial "sudo" test in bootstrap.
Use the generated protobuf file from the openxc-message-format repo.
Restore use of parallel make jobs when testing.

I had to turn this off in order to make sure the protobuf implementation
was generated first, but that caused enough problems that I moved it to
a submodule.
Add the CAN bus to outgoing raw protobuf messages.
Silence initial "sudo" test in bootstrap.
Fix info logging when installing pip.
Merge branch 'next' into binary-output
Restore debug output when running test suite.
Merge branch 'next' into binary-output
Add (currently failing) tests for protobuf output format.