Update spring boot to 2.2

Update spring boot to 2.2

- update spring dependency to 2.2.13
- remove profile based switch between spring versions 1.5.22 and 2.1.12
- migrate testng based tests in aai-els-onap-logging to junit 4
- rely more on boms for dependencyManagement by removing separate declarations (of spring and jackson)
- resolve some build warnings by adding dependency + plugin versions
- resolve some build warnings by removing duplicate declarations of dependencies
- resolve build warning about ambiguous reference to JsonObject.addProperty()

Issue-ID: AAI-3711
Change-Id: I7559e90ffb65199ee46bc5b7cdf5d9e73b7d87bc
Signed-off-by: Fiete Ostkamp <Fiete.Ostkamp@telekom.de>