Support X-Gitlab-Content-Sha256 header in repositoryFileApi.getFileInfo #903
Description
Gitlab claims that the HEAD version of https://docs.gitlab.com/ee/api/repository_files.html#get-file-from-repository contains a X-Gitlab-Content-Sha256 header. Gitlab4j should use this header to populate the RepositoryFile.contentSha256 field when calling getFileInfo() on a RepositoryFileApi