[maven-release-plugin] prepare for next development iteration

Change-Id: Icae2c289bad1398bb44652304cf8e8de62695391
Adapt pom for maven central

Change-Id: I75f30aad81d671541d7f5a6d22e0bba7fc688dc4
[maven-release-plugin] prepare release kmf-repository-api-3.0.6

Change-Id: I1b938145ffbd7cfe60c14c9a9346ce422b360402