Imports of package correlation

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
go.opentelemetry.io/otel/api/kv
go.opentelemetry.io/otel/api/propagation
net/urlPackage url parses URLs and implements query escaping.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.