Imports of package metrics

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/prometheus/client_golang/prometheusPackage prometheus is the core instrumentation package.
github.com/prometheus/client_golang/prometheus/promautoPackage promauto provides alternative constructors for the fundamental Prometheus metric types and their …Vec and …Func variants.
github.com/prometheus/client_golang/prometheus/promhttpPackage promhttp provides tooling around HTTP servers and clients.
net/httpPackage http provides HTTP client and server implementations.