Remove metadata force creation hack from Praefect
Praefect contains a testing hack to create repository metadata when first encountering a request for a repository. This is necessary as most of Praefect's RPC testing piggyback on Gitaly's tests. These tests generally place a repository directly into the storage rather than creating it through the API. As the repository creation doesn't go through the API, Praefect would return not found errors in the tests. While the hack is a workaround for this, it can hide real issues in the metadata management of Praefect. We should update the tests to create the repositories through the API so we can remove the testing hack from Praefect.
Edited by Sami Hiltunen