Use ansible-core 2.11 for tests

Change-Id: Id0f5ed1b2ccd061bedd231c8cb50ecfe7db55d97

ansible-requirements.txt

@@ -2,5 +2,5 @@
 # to licensing conflicts. But we sill need to be able to pull them in for
 # lint checks and want to document these as ansible specific things that may
 # be required for this repository.
-ansible>=2.8,<2.10
+ansible-core<2.12
 ansible-lint

requirements.txt

@@ -1,2 +1,2 @@
 pbr>=1.6
-ansible>=2.8,<2.10
+ansible-core<2.12

zuul.d/playbooks/pre.yml

@@ -43,7 +43,7 @@
       register: pub_key
 
     - name: Ensure can ssh to can connect to localhost
-      authorized_key:
+      ansible.posix.authorized_key:
         user: "{{ ansible_user }}"
         key: "{{ pub_key['content'] | b64decode }}"