Use Gradle build scans
Use Gradle build scans

This commit configures Gradle build scans for the Spring Framework
build. Scans aren't performed for every build but can be enabled
with the following:

```
./gradlew build --scan
```

Issue: SPR-15885

spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework,spring-projects/spring-framework