CI: Workaround rc:-13 issue

There is a race condition in Ansible that can result in this failure:

  msg: |-
  MODULE FAILURE
  See stdout/stderr for the exact error
  rc: -13

Disabling SSH pipelining prevents the issue at the cost of Ansible
execution duration.

See:
 - https://github.com/ansible/ansible/issues/78344
 - https://github.com/ansible/ansible/issues/81777

Change-Id: I62221df4650ddd02afdbc0993e783bf66b706a1c

playbooks/kayobe-base/pre.yml

@@ -15,7 +15,9 @@
       callbacks_enabled = ansible.posix.profile_tasks
 
       [ssh_connection]
-      pipelining = True
+      # NOTE(wszusmki): Disable pipelining due to:
+      # https://github.com/ansible/ansible/issues/81777
+      pipelining = False
       retries = 3
     ansible_cfg_kolla: |
       [defaults]
@@ -31,7 +33,9 @@
       callbacks_enabled = ansible.posix.profile_tasks
 
       [ssh_connection]
-      pipelining = True
+      # NOTE(wszusmki): Disable pipelining due to:
+      # https://github.com/ansible/ansible/issues/81777
+      pipelining = False
       retries = 3
   roles:
     - role: kayobe-diagnostics