Remove references to unsupported operating systems

All references to Gentoo, SUSE, Debian stretch and Centos-7  are removed.
Conditional tasks, ternary operators and variables are simplified where possible
OS specific variables files are generalised where possible

Change-Id: I796d9de164a8b79eff8a615442dd46e7de2353e7

defaults/main.yml

@@ -211,7 +211,6 @@ cinder_osapi_volume_workers: "{{ [[(ansible_facts['processor_vcpus']//ansible_fa
 cinder_target_helper_mapping:
   RedHat: lioadm
   Debian: tgtadm
-  Suse: tgtadm
 cinder_target_helper: "{{ cinder_target_helper_mapping[ansible_facts['os_family']] }}"
 cinder_iscsi_iotype: fileio
 cinder_iscsi_num_targets: 100

meta/main.yml

@@ -22,17 +22,14 @@ galaxy_info:
   platforms:
     - name: Debian
       versions:
-        - stretch
+        - buster
     - name: Ubuntu
       versions:
-        - xenial
         - bionic
+        - focal
     - name: EL
       versions:
-        - 7
+        - 8
-    - name: opensuse
-      versions:
-        - 15
   categories:
     - cloud
     - python

tasks/cinder_install.yml

@@ -29,7 +29,7 @@
   package:
     name: "{{ cinder_package_list }}"
     state: "{{ cinder_package_state }}"
-    update_cache: "{{ (ansible_facts['pkg_mgr'] in ['apt', 'zypper']) | ternary('yes', omit) }}"
+    update_cache: "{{ (ansible_facts['pkg_mgr'] == 'apt') | ternary('yes', omit) }}"
     cache_valid_time: "{{ (ansible_facts['pkg_mgr'] == 'apt') | ternary(cache_timeout, omit) }}"
   register: install_packages
   until: install_packages  is success

tasks/main.yml

@@ -182,7 +182,7 @@
   package:
     name: "{{ cinder_volume_distro_packages_tools }}"
     state: "{{ cinder_package_state }}"
-    update_cache: "{{ (ansible_facts['pkg_mgr'] in ['apt', 'zypper']) | ternary('yes', omit) }}"
+    update_cache: "{{ (ansible_facts['pkg_mgr'] == 'apt') | ternary('yes', omit) }}"
     cache_valid_time: "{{ (ansible_facts['pkg_mgr'] == 'apt') | ternary(cache_timeout, omit) }}"
   register: install_packages
   until: install_packages  is success

vars/redhat.yml

@@ -26,7 +26,7 @@ cinder_distro_packages:
 
 cinder_service_distro_packages:
   - openstack-cinder
-  - "{{ ansible_facts['distribution_major_version'] is version('8', '<') | ternary('systemd-python', 'python3-systemd') }}"
+  - python3-systemd
 
 cinder_devel_distro_packages:
   - git
@@ -41,7 +41,7 @@ cinder_api_distro_packages: []
 cinder_volume_service_distro_packages: []
 
 cinder_volume_distro_packages_tools:
-  - "qemu-img{% if ansible_facts['distribution_major_version']|int <= 7 %}-ev{% endif %}"
+  - qemu-img
 
 cinder_volume_distro_packages:
   - iscsi-initiator-utils

vars/suse.yml

@@ -1,69 +0,0 @@
----
-# Copyright 2016, Rackspace US, Inc.
-# Copyright 2017, SUSE LINUX GmbH.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# service names
-tgt_service_name: tgtd
-
-# Common yum packages
-cinder_distro_packages:
-  - libkmod2
-  - libxslt1
-
-cinder_service_distro_packages:
-  - openstack-cinder-scheduler
-  - python3-openstackclient
-  - python3-shade
-
-cinder_api_distro_packages:
-  - openstack-cinder-api
-
-cinder_devel_distro_packages:
-  - git-core
-  - libxslt-devel
-  - libkmod-devel
-  - postgresql-devel
-  - systemd-devel
-  - zlib-devel
-
-cinder_volume_service_distro_packages:
-  - openstack-cinder-volume
-
-cinder_volume_distro_packages_tools:
-  - qemu-tools
-
-cinder_volume_distro_packages:
-  - open-iscsi
-  - nfs-utils
-  - rpcbind
-
-cinder_lvm_volume_distro_packages:
-  - device-mapper
-  - lvm2
-  - parted
-  - tgt
-
-cinder_backup_service_distro_packages:
-  - openstack-cinder-backup
-
-cinder_backup_distro_packages:
-  - open-iscsi
-  - nfs-utils
-  - rpcbind
-
-cinder_oslomsg_amqp1_distro_packages:
-  - cyrus-sasl
-  - cyrus-sasl-plain
-  - cyrus-sasl-digestmd5