Add support for glusterfs mounts

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/837706
Change-Id: I2631e6f00011942954be7c776e3c99a11bdfb28d

defaults/main.yml

@@ -65,5 +65,8 @@ systemd_default_mount_options: 'defaults'
 #     type: "fuse.s3fs"
 #     options: "url=https://s3-{{aws_region}}.amazonaws.com,_netdev,allow_other,use_path_request_style"
 #     credentials: "ACCESS_KEY_ID:SECRET_ACCESS_KEY"
+#   - what: gluster-server:gluster-volume-name
+#     where: /mnt/shared_storage
+#     type: glusterfs
 
 systemd_mounts: []

tasks/systemd_install.yml

@@ -50,3 +50,41 @@
   package:
     name: "{{ systemd_mount_packages }}"
     state: present
+
+# NOTE(jrosser) as we call systemd_service from inside a block: with a when:
+#  parameter, the when: condition must be able to be resolved inside the
+#  systemd_service role where role vars from systemd_mount are not in scope
+- name: Make boolean flag for setting up glusterfs
+  set_fact:
+    _configure_glusterfs: "{{ 'glusterfs' in systemd_mount_types }}"
+
+- name: Configure fuse for glusterfs
+  when:
+    - _configure_glusterfs
+  block:
+    - name: Configure systemd-tmpfiles to create /dev/fuse at boot
+      copy:
+        content: "c /dev/fuse 0600 - - - 10:229"
+        dest: "/etc/tmpfiles.d/openstack-ansible-systemd_mount-glusterfs-client.conf"
+      register: _glusterfs_server_tmpfiles
+
+    - name: Apply systemctl overrides
+      when: ansible_facts['pkg_mgr'] == 'dnf'
+      include_role:
+        name: systemd_service
+      vars:
+        systemd_services:
+          - service_name: systemd-tmpfiles-setup-dev
+            restart_changed: false
+            load: false
+            systemd_overrides_only: true
+            systemd_overrides:
+              Unit:
+                ConditionCapability: ""
+
+    - name: Restart systemd-tmpfiles-setup-dev
+      service:
+        name: "systemd-tmpfiles-setup-dev"
+        state: restarted
+      when:
+        - _glusterfs_server_tmpfiles is changed

vars/debian.yml

@@ -6,3 +6,6 @@ systemd_ceph_packages:
 
 systemd_s3_packages:
   - s3fs
+
+systemd_glusterfs_packages:
+  - glusterfs-client

vars/main.yml

@@ -34,4 +34,7 @@ systemd_mount_packages: |-
   {% if 'fuse.s3fs' in mount_types %}
   {%   set _ = packages.extend(systemd_s3_packages) %}
   {% endif %}
+  {% if 'glusterfs' in mount_types %}
+  {%   set _ = packages.extend(systemd_glusterfs_packages) %}
+  {% endif %}
   {{ packages }}

vars/redhat.yml

@@ -6,3 +6,7 @@ systemd_ceph_packages:
 
 systemd_s3_packages:
   - s3fs-fuse
+
+systemd_glusterfs_packages:
+  - glusterfs
+  - glusterfs-fuse