Bump version suffix to 2.16.0 rc2
Bump version suffix to 2.16.0 rc2

Signed-off-by: Federico Morg Pareschi <ff862f58af48d157b995cd83870fbfa4aec8edf3@google.com>

mbakke/ganeti,mbakke/ganeti,ganeti/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti/ganeti