test: fix luatest server cleanup
It doesn't work, because fio.rmtree doesn't accept wildcards. Let's delete the whole server working tree on cleanup. NO_DOC=test NO_CHANGELOG=test
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It doesn't work, because fio.rmtree doesn't accept wildcards. Let's delete the whole server working tree on cleanup. NO_DOC=test NO_CHANGELOG=test
mentioned in commit 32250ed3