add debug support for creds_by_conn
add debug support for creds_by_conn

uwiger/rvi_core,PDXostc/rvi_core,uwiger/rvi_core,magnusfeuer/rvi_core,PDXostc/rvi_core,PDXostc/rvi_core,uwiger/rvi_core,magnusfeuer/rvi_core,magnusfeuer/rvi_core