Enable win podman-machine test failure

Intended to serve as motivation to fix them.  Removed from status
aggregator so the failures don't block PR merging.  Updated comment text
to reference related open issue, containers#20548.

Signed-off-by: Chris Evich <cevich@redhat.com>

.cirrus.yml

@@ -764,9 +764,6 @@ podman_machine_aarch64_task:
 podman_machine_windows_task:
     name: *std_name_fmt
     alias: podman_machine_windows
-    # TODO: These tests are new and mostly fail.  Disable all failures impacting overall CI status
-    # until the tests, scripts, and environment stabalize.
-    allow_failures: $CI == $CI
     # Only run for non-docs/copr PRs and non-release branch builds
     # and never for tags.  Docs: ./contrib/cirrus/CIModes.md
     only_if: >-
@@ -1061,7 +1058,9 @@ success_task:
         - rootless_integration_test
         - podman_machine
         - podman_machine_aarch64
-        - podman_machine_windows
+        # TODO: issue #20548; These tests are new and mostly fail.
+        # Ignore status until tests, scripts, and/or environment stabalize.
+        # - podman_machine_windows
         - local_system_test
         - local_system_test_aarch64
         - remote_system_test

contrib/cirrus/cirrus_yaml_test.py

@@ -27,7 +27,7 @@ class TestDependsOn(TestCaseBase):
 
     ALL_TASK_NAMES = None
     SUCCESS_DEPS_EXCLUDE = set(['success', 'bench_stuff', 'artifacts',
-        'release', 'release_test'])
+        'release', 'release_test', 'podman_machine_windows'])
 
     def setUp(self):
         super().setUp()