get/import: more meaningful message on NoRemoteError

[pared]

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Fixes #2711

[shcheklein]

We have already a message that starts with Setup default remote with ... - do we keep it? @pared could you please show screens of how would it look like so that we can review?

[pared]

@shcheklein

We have already a message that starts with Setup default remote with ... - do we keep it? @pared could you please show screens of how would it look like so that we can review?

I don't think we should remove this message, as NoRemoteError can be raised when trying to push/pull/fetch. I would rather consider newly added error as "interpretation" of NoRemoteError which has meaning only in case of get/import.

Reproduction script:

#!/bin/bash

rm -rf repo remote_repo storage git_repo
mkdir repo remote_repo storage git_repo

pushd remote_repo
git init >> /dev/null && dvc init -q

set -x
set -e
echo data >> data
dvc add data
git add .dvc/config data.dvc .gitignore
git commit -m "add data"

popd
pushd repo

git init >> /dev/null && dvc init -q
dvc import ../remote_repo data

Result:
https://asciinema.org/a/280490

[efiop]

Thanks!