Fix the BRO v4 chart to work with Rancher 2.8

- Also: stop checking for a regexp == "." -- let the engine do it.
  Benchmarking shows the pattern-matching is a touch faster even with the function call

charts/rancher-backup/Chart.yaml

@@ -7,12 +7,12 @@ annotations:
   catalog.cattle.io/os: linux
   catalog.cattle.io/permits-os: linux,windows
   catalog.cattle.io/provides-gvr: resources.cattle.io.resourceset/v1
-  catalog.cattle.io/rancher-version: '>= 2.7.0-0 < 2.8.0-0'
+  catalog.cattle.io/rancher-version: '>= 2.8.0-0 < 2.9.0-0'
   catalog.cattle.io/release-name: rancher-backup
   catalog.cattle.io/scope: management
   catalog.cattle.io/type: cluster-tool
   catalog.cattle.io/ui-component: rancher-backup
-  catalog.cattle.io/upstream-version: 3.1.3
+  catalog.cattle.io/upstream-version: 3.0.0
 apiVersion: v2
 appVersion: 999
 description: Provides ability to back up and restore the Rancher application running

pkg/resourcesets/collector.go

@@ -195,9 +195,10 @@ func (h *ResourceHandler) filterByKind(filter v1.ResourceSelector, apiResources
 		if kindRegexp == nil {
 			continue
 		}
-		if (filter.KindsRegexp == "." || kindRegexp.MatchString(resObj.Kind) || kindRegexp.MatchString(resObj.Name)) &&
-			!disallowedKinds[resObj.Kind] && !disallowedKinds[resObj.Name] {
-			resourceList = append(resourceList, resObj)
+		if kindRegexp.MatchString(resObj.Kind) || kindRegexp.MatchString(resObj.Name) {
+			if !disallowedKinds[resObj.Kind] && !disallowedKinds[resObj.Name] {
+				resourceList = append(resourceList, resObj)
+			}
 		}
 	}
 	return resourceList, nil
@@ -279,7 +280,7 @@ func (h *ResourceHandler) filterByNamespace(filter v1.ResourceSelector, filtered
 	for _, resObj := range filteredByName {
 		namespace := resObj.GetNamespace()
 		if allowedNamespaces[namespace] ||
-			(filter.NamespaceRegexp != "" && (filter.NamespaceRegexp == "." || namespaceRegexp.MatchString(namespace))) {
+			(filter.NamespaceRegexp != "" && namespaceRegexp.MatchString(namespace)) {
 			filteredObjects = append(filteredObjects, resObj)
 		}
 	}