release 2.2.0

[Aloren]

Hello @rbotzer
We would like to release a new version of spring-data-aerospike with major upgrade to 2.2.0 spring-data-parent.

I've created release draft: https://github.com/aerospike-community/spring-data-aerospike/releases/tag/untagged-29783ec9d42ebafdef24
and updated version in master:
40c39ac

[rbotzer]

@Aloren Brian Nichols pushed it to Maven Central. Should be available in a few hours.