[REVIEW] Fix distributed error related to loop_in_thread

[galipremsagar]

Description

This PR resolves the following error showing up in latest distributed:

python/dask_cudf/dask_cudf/tests/test_distributed.py EE                                                                                                                                [100%]

=========================================================================================== ERRORS ===========================================================================================
_____________________________________________________________________________ ERROR at setup of test_basic[True] _____________________________________________________________________________
file /nvme/0/pgali/cudf/python/dask_cudf/dask_cudf/tests/test_distributed.py, line 24
  @pytest.mark.parametrize("delayed", [True, False])
  def test_basic(loop, delayed):  # noqa: F811
file /nvme/0/pgali/envs/cudfdev/lib/python3.9/site-packages/distributed/utils_test.py, line 145
  @pytest.fixture
  def loop(loop_in_thread):
E       fixture 'loop_in_thread' not found
>       available fixtures: benchmark, benchmark_weave, cache, capfd, capfdbinary, caplog, capsys, capsysbinary, cleanup, current_cases, doctest_namespace, loop, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, testrun_uid, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory, worker_id
>       use 'pytest --fixtures [testpath]' for help on them.

/nvme/0/pgali/envs/cudfdev/lib/python3.9/site-packages/distributed/utils_test.py:145
____________________________________________________________________________ ERROR at setup of test_basic[False] _____________________________________________________________________________
file /nvme/0/pgali/cudf/python/dask_cudf/dask_cudf/tests/test_distributed.py, line 24
  @pytest.mark.parametrize("delayed", [True, False])
  def test_basic(loop, delayed):  # noqa: F811
file /nvme/0/pgali/envs/cudfdev/lib/python3.9/site-packages/distributed/utils_test.py, line 145
  @pytest.fixture
  def loop(loop_in_thread):
E       fixture 'loop_in_thread' not found
>       available fixtures: benchmark, benchmark_weave, cache, capfd, capfdbinary, caplog, capsys, capsysbinary, cleanup, current_cases, doctest_namespace, loop, monkeypatch, pytestconfig, record_property, record_testsuite_property, record_xml_attribute, recwarn, testrun_uid, tmp_path, tmp_path_factory, tmpdir, tmpdir_factory, worker_id
>       use 'pytest --fixtures [testpath]' for help on them.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

Merging #11428 (e56a554) into branch-22.08 (6e0e47e) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@               Coverage Diff                @@
##           branch-22.08   #11428      +/-   ##
================================================
+ Coverage         86.44%   86.47%   +0.02%     
================================================
  Files               144      144              
  Lines             22856    22856              
================================================
+ Hits              19759    19765       +6     
+ Misses             3097     3091       -6     

Impacted Files	Coverage Δ
...thon/dask_cudf/dask_cudf/tests/test_distributed.py	18.86% <100.00%> (ø)
python/cudf/cudf/core/dataframe.py	93.77% <0.00%> (+0.04%)	⬆️
python/cudf/cudf/core/column/string.py	88.80% <0.00%> (+0.12%)	⬆️
python/cudf/cudf/core/groupby/groupby.py	91.10% <0.00%> (+0.21%)	⬆️
python/cudf/cudf/core/tools/datetimes.py	84.49% <0.00%> (+0.30%)	⬆️
python/cudf/cudf/core/column/lists.py	93.65% <0.00%> (+0.97%)	⬆️

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[galipremsagar]

@gpucibot merge