add RBD Provisioner Addon (#3667) (#3668)

Based on the CephFS Provisioner Addon, the following changes have been made:
 - Upstream v2.1.1-k8s1.11
 - Configurable Provisioner replicas

roles/bootstrap-os/tasks/main.yml

@@ -59,3 +59,10 @@
     filter: ansible_hostname
   when:
     - hostname_changed.changed
+
+- name: "Install ceph-commmon package"
+  package:
+    name:
+      - ceph-common
+    state: latest
+  when: rbd_provisioner_enabled|default(false)