Support qemu block rbd in nova-compute

This is necessary if using nova-compute with RBD backend (directly,
not via Cinder) and wishing to make an instance image to Glance
while (1) following the recommended Ceph permissions which do not
give Nova write permissions to the images' pool or (2) not using
RBD with Glance or (3) not revealing what Glance actually uses
as the backend (hiding locations).

Closes-Bug: #2013075

Change-Id: I88e1e0ca01b2b2effad9515b905cc761fbb5d2d4
(cherry picked from commit 9e92e4c)

Author: yoctozepto

docker/nova/nova-compute/Dockerfile.j2

@@ -28,6 +28,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
             'python3-libguestfs',
             'python3-oslo-vmware',
             'python3-rtslib',
+            'qemu-kvm-block-rbd',
             'sysfsutils',
             'targetcli',
             'xfsprogs'
@@ -68,6 +69,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
             'python3-rados',
             'python3-rbd',
             'python3-rtslib-fb',
+            'qemu-block-extra',
             'sasl2-bin',
             'sysfsutils',
             'targetcli-fb',