gitlab-backup/restore: Gitlab wants uploads/ to be 0750 and dirs inside uploads/ to be 0755

As with repositories (see patch "gitlab-backup/restore: GitLab wants
repositories to be drwxrws---") Gitlab wants proper permissions for
uploads/ - else the following check fail

    Uploads directory setup correctly? ... no
      Try fixing it:
      sudo chmod 0750 .../var/gitlab/uploads
      For more information see:
      doc/install/installation.md in section "GitLab"
      Please fix the error above and rerun the checks.

    Uploads directory setup correctly? ... no
      Try fixing it:
      sudo chown -R slapuser14 .../var/gitlab/uploads
      sudo find .../var/gitlab/uploads -type f -exec chmod 0644 {} \;
      sudo find .../var/gitlab/uploads -type d -not -path .../var/gitlab/uploads -exec chmod 0755 {} \;

and files are not served back from uploads - e.g. there is no uploaded icons shown.

/cc @kazuhiko

contrib/gitlab-backup

@@ -194,6 +194,11 @@ backup_restore() {
     $GIT_BACKUP restore $HEAD gitlab/misc:"$tmpd/gitlab_backup"
     backup_info="$tmpd/gitlab_backup/backup_information.yml"
 
+    # gitlab wants uploads/ to be 0750 and dirs inside uploads/ to be 0755
+    chmod 0750 "$tmpd/gitlab_backup"/uploads*
+    find "$tmpd/gitlab_backup"/uploads* -mindepth 1 -type d \
+        -exec chmod 0755 {} ';'
+
     # recreate tarballs from *.tar.gz directories
     find "$tmpd/gitlab_backup" -maxdepth 1 -type d -name "*.tar.gz" | \
     while read tar; do