Add the py-bcrypt package to the ceph-daemon image

With the upgrade to Reef 18.2.0, there is an unmet dependency for
py-bcrypt in ceph-mgr that prevents the pg_autoscaler module (and
probably others) from working properly.

Change-Id: I4508f750235b2355ad6a50e14f451f421e136cf8

ceph-daemon/Dockerfile.ubuntu_focal

@@ -54,6 +54,7 @@ RUN set -ex ;\
       six \
       openssl-python \
       pyopenssl \
+      py-bcrypt \
       python-openstackclient \
       python-swiftclient ;\
     curl -sSL https://dl.k8s.io/v${KUBE_VERSION}/kubernetes-client-linux-amd64.tar.gz | tar -zxv --strip-components=1 ;\