Graphite: Make Graphite config page more accessible (#43333) (#43609)

(cherry picked from commit 7682eabd29)

Co-authored-by: Piotr Jamróz <pm.jamroz@gmail.com>

public/app/plugins/datasource/graphite/configuration/ConfigEditor.tsx

@@ -80,6 +80,7 @@ export class ConfigEditor extends PureComponent<Props, State> {
                 Version
               </InlineFormLabel>
               <Select
+                aria-label="Graphite version"
                 menuShouldPortal
                 value={currentVersion}
                 options={graphiteVersions}
@@ -92,6 +93,7 @@ export class ConfigEditor extends PureComponent<Props, State> {
             <div className="gf-form">
               <InlineFormLabel tooltip={this.renderTypeHelp}>Type</InlineFormLabel>
               <Select
+                aria-label="Graphite backend type"
                 menuShouldPortal
                 options={graphiteTypes}
                 value={graphiteTypes.find((type) => type.value === options.jsonData.graphiteType)}