[PR #10537/9a296225 backport][stable-11] Disable pipelining for doas and machinectl on ansible-core 2.19+ (#10557)

Disable pipelining for doas and machinectl on ansible-core 2.19+ (#10537)

Disable pipelining for doas and machinectl.

(cherry picked from commit 9a29622584)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/become/machinectl.py

@@ -75,6 +75,8 @@ notes:
     of C(machinectl). This rule must alter the prompt behaviour to ask directly for the user credentials, if the user is allowed
     to perform the action (take a look at the examples section). If such a rule is not present the plugin only works if it
     is used in context with the root user, because then no further prompt is shown by C(machinectl).
+  - This become plugin does not work when connection pipelining is enabled. With ansible-core 2.19+, using it automatically
+    disables pipelining. On ansible-core 2.18 and before, pipelining must explicitly be disabled by the user.
 """
 
 EXAMPLES = r"""
@@ -107,6 +109,10 @@ class BecomeModule(BecomeBase):
     success = ('==== AUTHENTICATION COMPLETE ====',)
     require_tty = True  # see https://github.com/ansible-collections/community.general/issues/6932
 
+    # See https://github.com/ansible/ansible/issues/81254,
+    # https://github.com/ansible/ansible/pull/78111
+    pipelining = False
+
     @staticmethod
     def remove_ansi_codes(line):
         return ansi_color_codes.sub(b"", line)