[ceph-daemon] Use pip instead of apt to install OpenSSL for Python

Some Ceph mgr modules appear with unsatisfied dependencies when
OpenSSL for Python is installed via apt. Installing openssl-python
via pip instead resolves the dependency issues.

Change-Id: Ie7423b04b3d8d7ffdc9b3c31c3f5b62cb32d3e75

ceph-daemon/Dockerfile.ubuntu_focal

@@ -45,7 +45,6 @@ RUN set -ex ;\
         curl \
         python3 \
         python3-dev \
-        python3-openssl \
         uuid-runtime \
         jq \
         alien \
@@ -54,6 +53,7 @@ RUN set -ex ;\
     pip3 --no-cache-dir install --upgrade --ignore-installed PyYAML ;\
     pip3 --no-cache-dir install --upgrade --ignore-installed \
       six \
+      openssl-python \
       python-openstackclient \
       python-swiftclient ;\
     curl -sSL https://dl.k8s.io/v${KUBE_VERSION}/kubernetes-client-linux-amd64.tar.gz | tar -zxv --strip-components=1 ;\