Add dependency management for hazelcast-hibernate52

[vpavic]

Since master has moved to Hibernate 5.2 in 943262b, dependency management for hazelcast-hibernate52 should be added.

This artifact originates from the same repository as hazelcast-hibernate5 which is already included in Boot's dependency management so existing hazelcast-hibernate5.version can be reused:

hazelcast-hibernate5 supports Java 6+, Hibernate 5.0.x, Hibernate 5.1.x and Hazelcast 3.7+

hazelcast-hibernate52 supports Java 8, Hibernate 5.2.x and Hazelcast 3.7+

On a sidenote, if Boot 2.0 minimum supported version of Hibernate is indeed 5.2 as indicated by #7586 then perhaps this PR could be expanded to remove dependency management for hazelcast-hibernate4 and hazelcast-hibernate5?

[wilkinsona]

Thanks for the PR, @vpavic.

perhaps this PR could be expanded to remove dependency management for hazelcast-hibernate4 and hazelcast-hibernate5?

Yes, please. Aligning with Hibernate 5.2 as a minimum makes sense for 2.0 (I should have done it in #7586).

[vpavic]

Yes, please.

Done, PR updated.

BTW sorry for the confusion, you did remove hazelcast-hibernate4 from dependency management in 943262b so this PR is now effectively replacing the hazelcast-hibernate5 with hazelcast-hibernate52.