Merge pull request #12967 from franciscocpg/custom-all-value-variable-interpolation

Replacing variable interpolation in "All value" value

public/app/features/templating/template_srv.ts

@@ -209,7 +209,7 @@ export class TemplateSrv {
         value = this.getAllValue(variable);
         // skip formatting of custom all values
         if (variable.allValue) {
-          return value;
+          return this.replace(value);
         }
       }