This sets BuildKit version from the build information embedded
in running binary so we are aligned with the expected vendoring.

We iterate over all dependencies and find the BuildKit one
and set the right version. We also check if the module is
replaced and use it this case.

There is also additional checks if a pseudo version is
detected. See comments in code for more info.

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

Refactor pkg/chrootarchive in terms of those utilities.

Signed-off-by: Cory Snider <csnider@mirantis.com>

Signed-off-by: Tibor Vass <tibor@docker.com>

This was done with something along the lines of:

```
mv internal/test testutil
pushd testutil/; grep -IRl "package test" | xargs -I '{}' sed -i -e 's|package test|package testutil|g' {}; popd
mv internal/testutil/*.go testutil/ && rm -rf internal/
grep -IRl "github.com\/docker\/docker\/internal\/test" | xargs -I '{}' sed -i -e 's|github.com/docker/docker/internal/test|github.com/docker/docker/test|g' {}
goimports .
```

I also modified the basic plugin path in testutil/fixtures/plugin.

Signed-off-by: Sam Whited <sam@samwhited.com>

Starting the daemon should not load the busybox image again
in most cases, so add a new `StartNodeWithBusybox` function
to be clear that this one loads the busybox image, and use
`StartNode()` for cases where loading the busybox image is
not needed.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

The daemon was already created and started with the busybox
image loaded, so there's no need to load the image again.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Signed-off-by: Tibor Vass <tibor@docker.com>

Signed-off-by: Tibor Vass <tibor@docker.com>

Signed-off-by: Tibor Vass <tibor@docker.com>

Signed-off-by: Tibor Vass <tibor@docker.com>