upstream ci: Move Azure scripts to infra directory

Move Azure scripts to infra directory, as only roles and modules test
playbooks should exist in the tests directory.

infra/azure/build-containers.yml

@@ -0,0 +1,60 @@
+---
+
+schedules:
+- cron: "0 0 * * 0"
+  displayName: Weekly Sunday midnight build
+  branches:
+    include:
+    - master
+  always: true
+
+trigger: none
+
+pool:
+  vmImage: 'ubuntu-22.04'
+
+stages:
+
+# Currently, it's not possible to use CentOS container
+#
+# - stage: CentOS_7
+#   dependsOn: []
+#   jobs:
+#   - template: templates/build_container.yml
+#     parameters:
+#       job_name_suffix: Centos7
+#       distro: centos-7
+
+- stage: CentOS_8_Stream
+  dependsOn: []
+  jobs:
+  - template: templates/build_container.yml
+    parameters:
+      job_name_suffix: C8S
+      distro: c8s
+      # ansible-core 2.17+ cannot be used to deploy on CentOS 8 Stream.
+      ansible_core_version: "<2.17"
+
+- stage: CentOS_9_Stream
+  dependsOn: []
+  jobs:
+  - template: templates/build_container.yml
+    parameters:
+      job_name_suffix: C9S
+      distro: c9s
+
+- stage: Fedora_Latest
+  dependsOn: []
+  jobs:
+  - template: templates/build_container.yml
+    parameters:
+      job_name_suffix: FedoraLatest
+      distro: fedora-latest
+
+- stage: Fedora_Rawhide
+  dependsOn: []
+  jobs:
+  - template: templates/build_container.yml
+    parameters:
+      job_name_suffix: FedoraRawhide
+      distro: fedora-rawhide