Block Ansible 2.9.12

Ansible 2.9.12 changed default permissions of created files to 600 [1].
This breaks kayobe because kolla-ansible generates admin-openrc.sh owned
by root:root with mode 0600, which kayobe fails to read to generate
public-openrc.sh.

Block only Ansible 2.9.12 as the next release should include a revert of
this change.

[1] ansible/ansible#71200

Change-Id: I3de408d384141eee1a088d222dca7d583251a297
Story: 2008011
Task: 40661

ansible/roles/kolla-ansible/tasks/install.yml

@@ -81,7 +81,7 @@
       # Limit the version of ansible used by kolla-ansible to avoid new
       # releases from breaking tested code. Changes to this limit should be
       # tested.
-      - ansible>=2.8,<2.10,!=2.8.9,!=2.9.8
+      - ansible>=2.8,<2.10,!=2.8.9,!=2.9.8,!=2.9.12
       - selinux
   pip:
     name: "{{ (kolla_ansible_packages + kolla_ansible_venv_extra_requirements) | select | list }}"

requirements.txt

@@ -1,5 +1,5 @@
 pbr>=2.0 # Apache-2.0
-ansible>=2.8.0,<2.10.0,!=2.8.9,!=2.9.8 # GPLv3
+ansible>=2.8.0,<2.10.0,!=2.8.9,!=2.9.8,!=2.9.12 # GPLv3
 cliff>=3.1.0 # Apache
 netaddr!=0.7.16,>=0.7.13 # BSD
 PyYAML>=3.10.0 # MIT