Define a basic logger interface

Signed-off-by: Evan Lezar <elezar@nvidia.com>

internal/ldcache/ldcache.go

@@ -29,8 +29,8 @@ import (
 	"syscall"
 	"unsafe"
 
+	"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
 	"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup/symlinks"
-	log "github.com/sirupsen/logrus"
 )
 
 const ldcachePath = "/etc/ld.so.cache"
@@ -94,11 +94,11 @@ type ldcache struct {
 	entries    []entry2
 
 	root   string
-	logger *log.Logger
+	logger logger.Interface
 }
 
 // New creates a new LDCache with the specified logger and root.
-func New(logger *log.Logger, root string) (LDCache, error) {
+func New(logger logger.Interface, root string) (LDCache, error) {
 	path := filepath.Join(root, ldcachePath)
 
 	logger.Debugf("Opening ld.conf at %v", path)