housekeeping/manager: Add housekeeping jobs to remove info/attributes
From git 2.43 on, Gitaly will read gitattributes from HEAD:.gitattributes. Old operation that copies HEAD:.gitattributes into info/attributes will be deprecated. The old info/attributes file must be removed because it has higher precedence than HEAD:.gitattributes.
This MR addes housekeeping jobs that remove info/attributes
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Closes #4540 (closed)
Edited by Eric Ju