Deploy Zun with Cinder Ceph support

Enables zun to access cinder volumes when cinder is configured to use
external ceph.
Copies ceph config file and ceph cinder keyring to /etc/ceph in
zun_compute container.

Closes-Bug: 1848934
Change-Id: Ie56868d5e9ed37a9274b8cbe65895f3634b895c8
(cherry picked from commit eb7e0f6fdac86ea9501b98e6e71554b024bffe96)

roles/baremetal/defaults/main.yml

@@ -16,6 +16,25 @@ docker_yum_gpgkey: "{{ docker_yum_url }}/gpg"
 docker_yum_gpgcheck: true
 docker_yum_package: "docker-ce"
 
+ceph_version: "pacific"
+epel_version: "8"
+ceph_url: "https://download.ceph.com"
+
+# Ceph APT repository configuration.
+ceph_apt_url: "{{ ceph_url }}/debian-{{ ceph_version }}/"
+ceph_apt_repo: "deb {{ ceph_apt_url }} {{ ansible_facts.distribution_release }} main"
+ceph_apt_key_file: "{{ ceph_url }}/keys/release.gpg"
+ceph_apt_key_id: "460F3994"
+ceph_apt_package: "ceph-common"
+
+# Ceph Yum repository configuration.
+ceph_yum_url: "{{ ceph_url }}/rpm-{{ ceph_version }}/"
+ceph_yum_baseurl: "{{ ceph_yum_url }}el{{ epel_version }}/$basearch/"
+ceph_yum_gpgkey: "{{ ceph_url }}/keys/release.asc"
+ceph_yum_gpgcheck: true
+ceph_yum_package: "ceph-common"
+epel_yum_package: "epel-release"
+
 customize_etc_hosts: True
 
 create_kolla_user: True

roles/baremetal/tasks/bootstrap-servers.yml

@@ -9,3 +9,8 @@
   when:
     - containerd_configure_for_zun|bool
     - "'zun-cni-daemon' in group_names"
+
+- include_tasks: configure-ceph-for-zun.yml
+  when:
+    - zun_configure_for_cinder_ceph | bool
+    - "'zun-compute' in group_names"

roles/baremetal/tasks/configure-ceph-for-zun.yml

@@ -0,0 +1,55 @@
+---
+- name: Install ceph-common
+  block:
+    - block:
+        - name: Install ceph apt gpg key
+          apt_key:
+            url: "{{ ceph_apt_key_file }}"
+            id: "{{ ceph_apt_key_id }}"
+            state: present
+          become: True
+
+        - name: Enable ceph apt repository
+          apt_repository:
+            repo: "{{ ceph_apt_repo }}"
+            filename: ceph
+          become: True
+
+        - name: Install apt packages
+          package:
+            name: "{{ ceph_apt_package }}"
+            state: present
+          become: True
+      when: ansible_facts.os_family == 'Debian'
+
+    - block:
+        - name: Enable ceph yum repository
+          yum_repository:
+            name: ceph
+            description: Ceph main Repository
+            baseurl: "{{ ceph_yum_baseurl }}"
+            gpgcheck: "{{ ceph_yum_gpgcheck | bool }}"
+            gpgkey: "{{ ceph_yum_gpgkey }}"
+          become: True
+
+        - name: Enable epel yum repository
+          package:
+            name: "{{ epel_yum_package }}"
+            state: present
+          become: True
+
+        - name: Install ceph rpm gpg key
+          rpm_key:
+            state: present
+            key: "{{ ceph_yum_gpgkey }}"
+          become: True
+          when:
+            - ceph_yum_gpgcheck | bool
+
+        - name: Install RPM packages
+          package:
+            name: "{{ ceph_yum_package }}"
+            state: present
+            enablerepo: epel
+          become: True
+      when: ansible_facts.os_family == 'RedHat'