(DP) Support Tip: 0 KB OB2DB*StoreOnceSoftwareCore* log files created on source-side gateway hosts

When media agent is started for source-side gateway using StoreOnceSoftware device it creates 0 KB debug files in DP default debug directory. The log4cplus logger that SOS core uses automatically creates the file on initialization, when it opens the file stream.

Those logs can acumulate over time a possible workaround to avoid this is setting omnirc variable OB2DBGDIR=/deb/null or OB2DBGDIR=NUL respectively. Of course this needs to be reset when actuall debugging information is needed for troubleshooting