fix nri removeMount does not work bug

nri needs to pass the del mount info to containerd,
so that containerd can handle the mount records that
need to be deleted correctly

pkg/adaptation/result.go

@@ -322,6 +322,11 @@ func (r *result) adjustMounts(mounts []*Mount, plugin string) error {
 		r.reply.adjust.Mounts = append(r.reply.adjust.Mounts, m)
 	}
 
+	// need add del mount, containerd needs to process this del mounts
+	for _, m := range del {
+		r.reply.adjust.Mounts = append(r.reply.adjust.Mounts, m)
+	}
+
 	// finally, apply additions/modifications to plugin container creation request
 	create.Container.Mounts = append(create.Container.Mounts, add...)