upstream ci: Run nightly tests against Ansible 2.9

Recently it was announced that Ansible 2.9 will be supported for some
time, and this patch ensures that we run the nightly tests against this
version of Ansible.

tests/azure/nightly.yml

@@ -16,6 +16,15 @@ stages:
 
 # Fedora
 
+- stage: FedoraLatest_Ansible_Core_2_9
+  dependsOn: []
+  jobs:
+  - template: templates/group_tests.yml
+    parameters:
+      build_number: $(Build.BuildNumber)
+      scenario: fedora-latest
+      ansible_version: "<2.10"
+
 - stage: FedoraLatest_Ansible_Core_2_13
   dependsOn: []
   jobs:
@@ -92,6 +101,15 @@ stages:
 
 # Fedora Rawhide
 
+- stage: FedoraRawhide_Ansible_Core_2_9
+  dependsOn: []
+  jobs:
+  - template: templates/group_tests.yml
+    parameters:
+      build_number: $(Build.BuildNumber)
+      scenario: fedora-rawhide
+      ansible_version: "<2.10"
+
 - stage: FedoraRawhide_Ansible_Core_2_13
   dependsOn: []
   jobs:
@@ -130,6 +148,15 @@ stages:
 
 # CentoOS 9 Stream
 
+- stage: c9s_Ansible_Core_2_9
+  dependsOn: []
+  jobs:
+  - template: templates/group_tests.yml
+    parameters:
+      build_number: $(Build.BuildNumber)
+      scenario: c9s
+      ansible_version: "-core <2.9"
+
 - stage: c9s_Ansible_Core_2_13
   dependsOn: []
   jobs:
@@ -168,6 +195,15 @@ stages:
 
 # CentOS 8 Stream
 
+- stage: c8s_Ansible_Core_2_9
+  dependsOn: []
+  jobs:
+  - template: templates/group_tests.yml
+    parameters:
+      build_number: $(Build.BuildNumber)
+      scenario: c8s
+      ansible_version: "<2.10"
+
 - stage: c8s_Ansible_Core_2_13
   dependsOn: []
   jobs:
@@ -206,6 +242,15 @@ stages:
 
 # CentOS 7
 
+- stage: CentOS7_Ansible_Core_2_9
+  dependsOn: []
+  jobs:
+  - template: templates/group_tests.yml
+    parameters:
+      build_number: $(Build.BuildNumber)
+      scenario: centos-7
+      ansible_version: "<2.10"
+
 - stage: CentOS7_Ansible_Core_2_13
   dependsOn: []
   jobs: