Imports of migrillian command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
errorsPackage errors implements functions to manipulate errors.
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/coreos/etcd/clientv3clientv3 is the official Go etcd client for v3.
github.com/golang/glogPackage glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
github.com/google/certificate-transparency-go/clientPackage client is a CT log client implementation and contains types and code for interacting with RFC6962-compliant CT Log instances.
github.com/google/certificate-transparency-go/jsonclientPackage jsonclient provides a simple client for fetching and parsing JSON CT structures from a log.
github.com/google/certificate-transparency-go/scannerPackage scanner holds code for iterating through the contents of a CT log.
github.com/google/certificate-transparency-go/trillian/migrillian/configpb
github.com/google/certificate-transparency-go/trillian/migrillian/corePackage core provides transport-agnostic implementation of Migrillian tool.
github.com/google/certificate-transparency-go/trillian/migrillian/election
github.com/google/certificate-transparency-go/trillian/migrillian/election/etcd
github.com/google/trillianPackage trillian contains the generated protobuf code for the Trillian API.
github.com/google/trillian/monitoringPackage monitoring provides monitoring functionality.
github.com/google/trillian/monitoring/prometheusPackage prometheus provides a Prometheus-based implementation of the MetricFactory abstraction.
github.com/google/trillian/utilPackage util holds utility functions.
github.com/prometheus/client_golang/prometheus/promhttpPackage promhttp provides tooling around HTTP servers and clients.
google.golang.org/grpcPackage grpc implements an RPC system called gRPC.
net/httpPackage http provides HTTP client and server implementations.
osPackage os provides a platform-independent interface to operating system functionality.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
timePackage time provides functionality for measuring and displaying time.