This change introduces a loadExternalComponent which can be used for
loading a single plugin path. The function is a combination of
the discoverSingle and discoverExternalComponents functions.
This change updates the underlying type of VagrantCloudErrors.Errors to match the expected errors response type and adds a simple test to verify the parsing of various error responses.
Tests before change
```
--- FAIL: TestVagranCloudErrors (0.00s)
client_test.go:23: failed to decode error response: json: cannot unmarshal array into Go struct field VagrantCloudErrors.errors of type map[string][]string
client_test.go:23: failed to decode error response: json: cannot unmarshal array into Go struct field VagrantCloudErrors.errors of type map[string][]string
client_test.go:26: failed to get expected response; expected "", got "error1. error2"
client_test.go:23: failed to decode error response: json: cannot unmarshal array into Go struct field VagrantCloudErrors.errors of type map[string][]string
client_test.go:26: failed to get expected response; expected "", got "message Bad credentials"
```
Test after change
```
--- PASS: TestVagranCloudErrors (0.00s)
```
GH-8392 introduced the feature that multiple tags can be specified. This
(presumably inadvertently) broke the option to tag an image without the
actual tag specified -- Docker handles this by assuming `latest` as the
tag.
In addition, use-cases exist for the `repository` field containing the
tag already, which was also broken.
Megan Marsh
Sylvia Moss
Pit
Hanjie Wang