Version updates for 4.15 stream

Required for
- https://git.eclipse.org/r/#/c/152779/
- https://git.eclipse.org/r/#/c/152781/
- https://git.eclipse.org/r/#/c/152782/
- https://git.eclipse.org/r/#/c/152783/
- https://git.eclipse.org/r/#/c/152784/
- https://git.eclipse.org/r/#/c/152785/


Change-Id: Ife9d31650e06ded2299de8f2173bdb446c0d2102
Signed-off-by: Karsten Thoms <karsten.thoms@itemis.de>
12 files changed