Add instance:export and instance:download command

It would be great if sfcc-ci would allow to transfer one sandbox’ state to another, therefore commands to run a site export & download it would be desirable.

[tobiaslohr]

Proposal:

Two additional commands (see below), should be tracked as separate issues. Once they are done, we can think about providing a high level command to copy an instance (propose to limit to sandbox only) which makes use of

New Command 1:

sfcc-ci instance:export --instance <instance> --data-units <units> --export-file <file> --sync

Options:

--instance optional, being the host name of the instance, --data-units being the set of data in JSON format to export --export-file being the file to store exported data to on the instance, relative to impex/src/instance --sync optional, whether to run in sync mode

New Command 2:

sfcc-ci data:download --instance <instance> --source <target> --file <file>

Options:

--instance optional, being the host name of the instance, e.g. --file being the file to download from instance and --source being the source location on the instance to download from relative to /webdav/Sites/Impex/, e.g. “src/instance”

[tobiaslohr]

We are splitting this into two tickets for better visibility.

1. instance:export command to run an instance export #121
2. data:download command to download resources #122