Fix null-terminated for UUID and TOKEN
Fix null-terminated for UUID and TOKEN

UUID and Token encapsulated at KNoT PDUs are not null-terminated.
This patch creates a local null-terminated copy of UUID and TOKEN
to share to other functions.

CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source