Gitlab Backup Changes for gitlab 11.11

@kirr This two commits are required to backup and restore with recent versions of gitlab.

- Skip gitlab page, else gitlab will try to restore it and fail.
- `Backup::Database.new` now require a parameter

/reviewed-on: !7

contrib/gitlab-backup

@@ -88,7 +88,7 @@ need_gitlab_config() {
         s = c.gitlab_shell
         puts Gitlab::VERSION, c.backup.path, s.repos_path, s.hooks_path
 
-        c = Backup::Database.new.config
+        c = Backup::Database.new($stdout).config
         puts c["database"]
         puts c["adapter"], c["username"], c["host"], c["port"], c["password"]
 
@@ -112,7 +112,7 @@ backup_pull() {
     tmpd=$(mktemp -d `pwd`/gitlab-backup.XXXXXX)
     trap 'rm -rf "$tmpd"' EXIT
 
-    gitlab-rake gitlab:backup:create SKIP=repositories,db | tee "$tmpd/gitlab_backup_create.out"
+    gitlab-rake gitlab:backup:create SKIP=repositories,db,pages | tee "$tmpd/gitlab_backup_create.out"
     backup_tar=`grep "^Creating backup archive: .* done" "$tmpd/gitlab_backup_create.out"` || \
         die "E: Cannot detect backup tar"