Merge "Bump minimum Ansible version to 2.9"

ansible/roles/prechecks/vars/main.yml

 ---
 docker_version_min: '1.10.0'
 docker_py_version_min: '2.0.0'
-ansible_version_min: '2.8'
+ansible_version_min: '2.9'
 ansible_version_max: '2.9'
 
 # Top level keys should match ansible_distribution.

doc/source/user/quickstart.rst

@@ -79,7 +79,7 @@ If not installing Kolla Ansible in a virtual environment, skip this section.
       pip install -U pip
 
 #. Install `Ansible <http://www.ansible.com>`__. Kolla Ansible requires at least
-   Ansible ``2.8`` and supports up to ``2.9``.
+   Ansible ``2.9`` and supports up to ``2.9``.
 
    .. code-block:: console
 

lower-constraints.txt

 alabaster==0.7.10
-ansible==2.8.0
+ansible==2.9.0
 appdirs==1.4.3
 asn1crypto==0.24.0
 Babel==2.5.3

releasenotes/notes/require-ansible-29-f03f4e22292a5bb4.yaml

+---
+upgrade:
+  - |
+    Kolla-Ansible now requires Ansible ``2.9``. Ansible ``2.8`` is not
+    supported anymore.

test-requirements.txt

@@ -13,4 +13,4 @@ coverage!=4.4,>=4.0 # Apache-2.0
 docker>=2.4.2 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 stestr>=2.0.0 # Apache-2.0
-ansible>=2.8.0 # GPLv3
+ansible>=2.9.0 # GPLv3

tests/run.yml

@@ -197,7 +197,7 @@
     - name: install kolla-ansible and dependencies
       vars:
         # Test latest ansible version on Ubuntu, minimum supported on others.
-        ansible_version_constraint: "{{ '==2.9.*,!=2.9.8,!=2.9.12' if base_distro == 'ubuntu' else '==2.8.*,!=2.8.14' }}"
+        ansible_version_constraint: "==2.9.*"
       pip:
         name:
           - "{{ kolla_ansible_src_dir }}"

tools/kolla-ansible

@@ -54,7 +54,7 @@ function check_environment_coherence {
         exit 1
     fi
 
-    local ANSIBLE_VERSION_MIN=2.8
+    local ANSIBLE_VERSION_MIN=2.9
     local ANSIBLE_VERSION_MAX=2.9
 
     if [[ $(printf "%s\n" "$ANSIBLE_VERSION_MIN" "$ANSIBLE_VERSION_MAX" "$ansible_version" | sort -V | head -n1) != "$ANSIBLE_VERSION_MIN" ]] ||