Add description of 'debug.ddb.capture.data' sysctl to DBD output capture section, missed in previous commit.
Add description of 'debug.ddb.capture.data' sysctl to DBD output
capture section, missed in previous commit.

MFC after:	3 months

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase