[stable-2.16] ansible-test - Fix parsing of cgroup entries

(cherry picked from commit e933d9d8a6)

Co-authored-by: Matt Clay <matt@mystile.com>

changelogs/fragments/ansible-test-cgroup-split.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ansible-test - Fix parsing of cgroup entries which contain a ``:`` in the path (https://github.com/ansible/ansible/issues/81977).

test/lib/ansible_test/_internal/cgroup.py

@@ -44,7 +44,7 @@ class CGroupEntry:
     @classmethod
     def parse(cls, value: str) -> CGroupEntry:
         """Parse the given cgroup line from the proc filesystem and return a cgroup entry."""
-        cid, subsystem, path = value.split(':')
+        cid, subsystem, path = value.split(':', maxsplit=2)
 
         return cls(
             id=int(cid),