Removing from distro dependencies the initscripts package. This was
added without a need as StarlingX itself has a initscripts package and
this is the one included in the image.
Adding python 3 dependency needed to compile Ceph's python3 packages.
Test plan:
Complete build run
Starlingx installation
Story: 2009074
Task: 44281
Signed-off-by: Delfino Curado <delfinogomes.curadofilho@windriver.com>
Change-Id: I381adbec209bcbbb3561457db1460a25e1809f5f