Add a parameter to configure if cleaning the database during a backup…

[eberonsh]

… restoration.

#enhancement

Description

Add a parameter to the command dbrestore. This option allows to set if the connector sends or not a clean parameter in the restore command.

Fixes # (issue)

Why should this be added

The restore command sends by default a --clean argument and there is no option to remove it in case it is causing a problem with the restoration process.

Explain value. Adding this option allows to control sending the --clean to the restore command in case of any trouble.