Fix missing qemu binary inside ironic conductor (#128)

Fixes
`Stderr: 'python3 -m oslo_concurrency.prlimit: failed to execute qemu-img: [Errno 2] No such file or directory\n'`

Author: BjoernT

ContainerFiles/ironic-conductor

@@ -58,7 +58,7 @@ LABEL org.opencontainers.image.description="OpenStack Service (ironic-conductor)
 COPY --from=dependency_build /var/lib/openstack /var/lib/openstack
 RUN export DEBIAN_FRONTEND=noninteractive \
   && apt-get update && apt-get upgrade -y \
-  && apt-get install --no-install-recommends -y libxml2 ipmitool iproute2 \
+  && apt-get install --no-install-recommends -y libxml2 ipmitool iproute2 qemu-utils \
   && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
   && apt-get clean -y \
   && rm -rf /var/lib/apt/lists/* \