Notable refactoring:
- Use stdlib "context" in place of "golang.org/x/net/context"
- Go-kit no longer wraps errors, so we remove the unwrap in transport_error.go
- Use MakeHandler when setting up endpoint tests (fixes test bug caught during
this refactoring)
Closes#1411.
Add logging middleware for more of the kolide Service interfaces.
This PR was created through code generation, however it's not likely that the logging middleware can all be continuously regenerated - we're likely to want to add method specific key/values to individual methods. Moving forward, logging middleware should be maintained when changes are made to a service interface method.
