In order to be able to protect the interface so that mistyped argument
do not endanger MaxScale yet still allow the developer access a router
option has been added that gives the debugcli two modes.
- Checked argument types and counts
- Removed trailing line feeds
- Removed thread ids from error logs (they are used in trace / debug log
- Added some state information to dcbs
- Added prefix 'Error' or 'Fatal' to error logs.
- Switches all error logs to use flushing log write.
