Make sure import_export.sh verifies if it can create the destination folder. If not abort

[DiegoPino]

What?

We should check if the user has permissions to create/dump the files in the destination on an EXPORT operation.

Also @alliomeria please add/document the need for jq and json_pp with the yum install commands (I think you detected we lack at least the last one?). Danke!

[alliomeria]

On the docs @DiegoPino --will aim to have updates up next week. Thank you!

[DiegoPino]

Thanks @alliomeria !