fix a drilldown issue with the 'spans list' view

Author: ldegio

userspace/sysdig/chisels/v_spans_list.lua

@@ -27,7 +27,7 @@ view_info =
 	view_type = "table",
 	applies_to = {"", "span.tag", "span.id", "span.time", "span.parenttime", "container.id", "proc.pid", "proc.name", "thread.tid", "fd.directory", "evt.res", "k8s.pod.id", "k8s.rc.id", "k8s.svc.id", "k8s.ns.id"},
 	use_defaults = true,
-	filter = "span.ntags=%depth+1",
+	filter = "span.ntags>=%depth+1",
 	drilldown_target = "spans_list",
 	drilldown_increase_depth = true,
 	columns =