Reference source directory for sonar testing

The MC listener code moved the source to a subdirectory. This change
reflects the new location of the source, and removes the exclusions
for the test code as sources no longer includes the test directory.

Issue-ID: RIC-632

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I040c8e64638922c9bbda5a0d976709b1353c50fe