Cert 4 and 4.2 better description of Authorization request header

[ViktorHaag]

We should say that the Sensor must:

• Use the Authorization request header, and use the Bearer authorization type
• Send the bearer token provided by the certification service when sending Caliper data to the certification endpoint

For example (taken from the security framework doc):

Authorization: Bearer 2YotnFZFEjr1zCsicMWpAA