[#1770] logger: Refactor Logger component

Make it store its internal `zap.Logger`'s level. Also, make all the
components to accept internal `logger.Logger` instead of `zap.Logger`; it
will simplify future refactor.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/services/reputation/eigentrust/controller/opts.go

@@ -14,7 +14,7 @@ type options struct {
 
 func defaultOpts() *options {
 	return &options{
-		log: zap.L(),
+		log: &logger.Logger{Logger: zap.L()},
 	}
 }