* [BAEL-4637] Performance difference between save() and saveAll() in Spring Data
* Apply suggestions from code review
* Rename IBookRepository.java to BookRepository.java
* [JAVA-1669] Upgrading JUnit and Maven Surefire Plugin versions
* Upgraded JUnit version for persistence-module and the modules that directly depends on it
* Upgraded Maven Surefire Plugin version for these as well
* Either made modules inheriting from persistence-modules instead of parent-modules or added relative paths when already inheriting persistence-modules
* Upgraded versions in other modules
* [JAVA-1669] Removed explicit relativePath in pom.xml when default value used
* [JAVA-1669] Minor fix