migrate to spring-data for repositories

...amework/samples/petclinic/repository/OwnerRepository.java

...framework/samples/petclinic/repository/PetRepository.java

...framework/samples/petclinic/repository/VetRepository.java

...amework/samples/petclinic/repository/VisitRepository.java

...es/petclinic/repository/jdbc/JdbcOwnerRepositoryImpl.java

...gframework/samples/petclinic/repository/jdbc/JdbcPet.java

...ples/petclinic/repository/jdbc/JdbcPetRepositoryImpl.java

...k/samples/petclinic/repository/jdbc/JdbcPetRowMapper.java

...ples/petclinic/repository/jdbc/JdbcVetRepositoryImpl.java

...es/petclinic/repository/jdbc/JdbcVisitRepositoryImpl.java

...ework/samples/petclinic/repository/jdbc/package-info.java

...ples/petclinic/repository/jpa/JpaOwnerRepositoryImpl.java

...amples/petclinic/repository/jpa/JpaPetRepositoryImpl.java

...amples/petclinic/repository/jpa/JpaVetRepositoryImpl.java

...ples/petclinic/repository/jpa/JpaVisitRepositoryImpl.java

...mework/samples/petclinic/repository/jpa/package-info.java

...c/repository/springdatajpa/SpringDataOwnerRepository.java

...nic/repository/springdatajpa/SpringDataPetRepository.java

...nic/repository/springdatajpa/SpringDataVetRepository.java

...c/repository/springdatajpa/SpringDataVisitRepository.java