libpod.storageService.CreateContainerStorage(): retrieve ID maps

When creating storage for a container using ID maps, read the ID maps
that are assigned to the container from the returned container
structure, rather than from the options structure that we passed to the
storage library, which it previously modified in error.

[NO NEW TESTS NEEDED]

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

libpod/storage.go

@@ -164,8 +164,8 @@ func (r *storageService) CreateContainerStorage(ctx context.Context, systemConte
 	logrus.Debugf("Container %q has run directory %q", container.ID, containerRunDir)
 
 	return ContainerInfo{
-		UIDMap:       options.UIDMap,
-		GIDMap:       options.GIDMap,
+		UIDMap:       container.UIDMap,
+		GIDMap:       container.GIDMap,
 		Dir:          containerDir,
 		RunDir:       containerRunDir,
 		Config:       imageConfig,