task.ansible: use shutil.move instead of os.rename to move a failure log
task.ansible: use shutil.move instead of os.rename to move a failure log

When moving a file between file systems of different types os.rename will
throw an exception, while shutil.move correctly handles that case.

Signed-off-by: Andrew Schoen <1bb641dc23c3a93cce4eee683bcf4b2bea7903a3@redhat.com>

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