MODULES-10620: Don't erase filesystem content and add force arg

[ahmet2mir]

Hello,

When a device already contains a FS, the command mkfs use "force" and erase the content. It could be very dangerous causing data lost.

To avoid this, add a "force" arg to filesystem. When set to default false

a device without FS will be created
a device with a FS will not be changed until user specify force, in this case umount and create the FS

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