chore(kubevirt): Use constants for default-{instancetype,preference}

Signed-off-by: Lee Yarwood <lyarwood@redhat.com>

Author: lyarwood

pkg/toolsets/kubevirt/vm/create/tool.go

@@ -15,6 +15,11 @@ import (
 	"k8s.io/utils/ptr"
 )
 
+const (
+	defaultInstancetypeLabel = "instancetype.kubevirt.io/default-instancetype"
+	defaultPreferenceLabel   = "instancetype.kubevirt.io/default-preference"
+)
+
 //go:embed plan.tmpl
 var planTemplate string
 
@@ -489,8 +494,8 @@ func searchDataSources(params api.ToolHandlerParams, query string) ([]DataSource
 		defaultInstancetype := ""
 		defaultPreference := ""
 		if labels != nil {
-			defaultInstancetype = labels["instancetype.kubevirt.io/default-instancetype"]
-			defaultPreference = labels["instancetype.kubevirt.io/default-preference"]
+			defaultInstancetype = labels[defaultInstancetypeLabel]
+			defaultPreference = labels[defaultPreferenceLabel]
 		}
 
 		results = append(results, DataSourceInfo{
@@ -501,7 +506,6 @@ func searchDataSources(params api.ToolHandlerParams, query string) ([]DataSource
 			DefaultPreference:   defaultPreference,
 		})
 	}
-
 	// Add common containerdisk images as well
 	results = append(results, getDefaultContainerDisks()...)
 
@@ -538,8 +542,8 @@ func listDataSourcesFromNamespace(params api.ToolHandlerParams, dynamicClient dy
 		defaultInstancetype := ""
 		defaultPreference := ""
 		if labels != nil {
-			defaultInstancetype = labels["instancetype.kubevirt.io/default-instancetype"]
-			defaultPreference = labels["instancetype.kubevirt.io/default-preference"]
+			defaultInstancetype = labels[defaultInstancetypeLabel]
+			defaultPreference = labels[defaultPreferenceLabel]
 		}
 
 		results = append(results, DataSourceInfo{