Add magnum image upload CI

This commit extends CI for magnum role by adding
image upload as well as template creation. While these variables are
optional it is still good to cover them with CI.

Needed-by: https://review.opendev.org/708097
Change-Id: Id7725e053e3fdb13ba587d783ae4a447d30907bc

tests/roles/bootstrap-host/tasks/prepare_aio_config.yml

@@ -176,6 +176,9 @@
     - src: user_variables_barbican.yml.j2
       dest: user_variables_barbican.yml
       condition: "{{ 'barbican' in bootstrap_host_scenarios_expanded }}"
+    - src: user_variables_magnum.yml.j2
+      dest: user_variables_magnum.yml
+      condition: "{{ 'magnum' in bootstrap_host_scenarios_expanded }}"
     - src: user_variables_manila.yml.j2
       dest: user_variables_manila.yml
       condition: "{{ 'manila' in bootstrap_host_scenarios_expanded }}"

tests/roles/bootstrap-host/templates/user_variables_magnum.yml.j2

@@ -0,0 +1,52 @@
+---
+# Copyright 2020, VEXXHOST, Inc.
+#
+# 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.
+
+magnum_glance_images:
+  - name: fedora-atomic-latest
+    disk_format: qcow2
+    image_format: bare
+    public: true
+    file: https://dl.fedoraproject.org/pub/alt/atomic/stable/Fedora-29-updates-20191126.0/AtomicHost/x86_64/images/Fedora-AtomicHost-29-20191126.0.x86_64.qcow2
+    distro: fedora-atomic
+    checksum: "sha1:7c1a88749d31a3828ac6a6b02e82d64f4c5823a5"
+
+magnum_cluster_templates:
+  - name: k8s
+    cloud: default
+    coe: kubernetes
+    docker_volume_size: 5
+    flavor_id: s1.magnum
+    master_flavor_id: m1.magnum
+    network_driver: flannel
+    volume_driver: cinder
+    image_id: fedora-atomic-latest
+    labels:
+      kube_tag: v1.16.0
+      etcd_tag: 3.3.17
+      kube_version: v1.16.0
+      boot_volume_size: 5
+      cloud_provider_tag: v1.15.0
+
+magnum_flavors:
+  - name: s1.magnum
+    cloud: default
+    ram: 256
+    vcpus: 1
+    disk: 5
+  - name: m1.magnum
+    cloud: default
+    ram: 512
+    vcpus: 1
+    disk: 5