Merge "[sensor] clarify definition of the uuid field" into nyc-dev
am: 2235cac

* commit '2235cac9ba091bf6b06d7e3bead24fdb36fcf1b5':
  [sensor] clarify definition of the uuid field

Change-Id: I27da5b9de8ade511bebfb38124eac7e875445b9f