Fix Wrong path setup in SpaceReseverTest

Description

It is wrong to set up tiered storage path with baseDir "/"

The problem is that the tests based on the above setup tries to create a directory /a and /b, however, it is unlikely for the unit test to have permission really create folders there.

Suggested solution:

Instead of using /a or /b directly, create temp folder by mTestFolder.newFolder(); first, then pass to setupConfWithMultiTier the dir under these tmp dirs.

Environment

None
Fixed
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Assignee

Bin Fan

Reporter

Bin Fan

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