Extend `JsonContentAssert` with `hasJsonPath` and `doesNotHaveJsonPath`
methods which can be used to check the path regardless of the value it
may or may not contain.
Prior to this commit there wasn't an easy way to assert that the
Jackson `@JsonInclude(JsonInclude.Include.NON_NULL)` annotation was
applied since `assertDoesNotHavePathValue` would pass for both
`{"name" : null}` and `{}`.
Closes gh-17608
Move projects to better reflect the way that Spring Boot is released.
The following projects are under `spring-boot-project`:
- `spring-boot`
- `spring-boot-autoconfigure`
- `spring-boot-tools`
- `spring-boot-starters`
- `spring-boot-actuator`
- `spring-boot-actuator-autoconfigure`
- `spring-boot-test`
- `spring-boot-test-autoconfigure`
- `spring-boot-devtools`
- `spring-boot-cli`
- `spring-boot-docs`
See gh-9316
