Public API

Some parts of the API should be available without
supplying an authentication token, e.g., / - the root
and /v1 - the specification of the API v1.

This patch allows to specify public routes in the
Pecan application configuration file and specifies the
mentioned routes as public ones.

Fixes: bug #1221263

Change-Id: Ie106f0767158d30fd89a72f011748537435ddeef
Merge "Public API"