Decouple wiki, snippets, designs and project repostory storage location
## Problem to solve All Git repositories associated with a project are currently stored on the same Gitaly storage. However, this may not be optimal from a cost/performance perspective. For example it may be possible to store all these repositories on HDD storage at no significant performance penalty. ## Further details ## Proposal Allow Git repositories to be rebalanced independently from a storage perspective. ## Links / references
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