NFD

IntegrationTests fib_matching test case has several invalid steps:

• "Invoke ndn-traffic to request / with MustBeFresh=true" is invalid since #3781 that disallows zero-component Interest name.
• "Invoke ndn-traffic to request /D with MustBeFresh=true and Exclude=[...,D]" and "Invoke ndn-traffic to request /D with MustBeFresh=true and Exclude=[...,E]" are invalid since #4444.

These steps should be removed.