packages source: fix new version addition to redirect list (groonga#1563

)

For example, this script output .htaccess as below when we release
PGroonga 3.0.3.

```
edirect /source/pgroonga/pgroonga-3.0.1.tar.gz https://github.com/pgroonga/pgroonga/releases/download/3.0.1/pgroonga-3.0.1.tar.gz
Redirect /source/pgroonga/pgroonga-3.0.1.tar.gz.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.1/pgroonga-3.0.1.tar.gz.asc
Redirect /source/pgroonga/pgroonga-3.0.1.zip https://github.com/pgroonga/pgroonga/releases/download/3.0.1/pgroonga-3.0.1.zip 
Redirect /source/pgroonga/pgroonga-3.0.1.zip.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.1/pgroonga-3.0.1.zip.asc
Redirect /source/pgroonga/pgroonga-3.0.2.tar.gz https://github.com/pgroonga/pgroonga/releases/download/3.0.2/pgroonga-3.0.2.tar.gz
Redirect /source/pgroonga/pgroonga-3.0.2.tar.gz.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.2/pgroonga-3.0.2.tar.gz.asc
Redirect /source/pgroonga/pgroonga-3.0.2.zip https://github.com/pgroonga/pgroonga/releases/download/3.0.2/pgroonga-3.0.2.zip 
Redirect /source/pgroonga/pgroonga-3.0.2.zip.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.2/pgroonga-3.0.2.zip.asc
Redirect /source/pgroonga/pgroonga-3.0.3.tar.gz https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.tar.gz
Redirect /source/pgroonga/pgroonga-3.0.3.tar.gz.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.tar.gz.asc
Redirect /source/pgroonga/pgroonga-latest.tar.gz https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.tar.gz
Redirect /source/pgroonga/pgroonga-latest.tar.gz.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.tar.gz.asc
Redirect /source/pgroonga/pgroonga-3.0.3.zip https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.zip 
Redirect /source/pgroonga/pgroonga-3.0.3.zip.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.zip.asc
Redirect /source/pgroonga/pgroonga-latest.zip https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.zip 
Redirect /source/pgroonga/pgroonga-latest.zip.asc https://github.com/pgroonga/pgroonga/releases/download/3.0.3/pgroonga-3.0.3.zip.asc
```

packages/packages-groonga-org-package-task.rb

@@ -263,7 +263,6 @@ def download_packages(target_namespace)
         "#{repository_rsync_base_path}/#{target_namespace}/#{@package}/"
       sh("rsync",
          "-av",
-         "--dry-run",
          "--include=.htaccess",
          "--exclude=*",
          rsync_dir,
@@ -285,7 +284,7 @@ def prepare(target_namespace)
       end
       File.open(htaccess_path, "w") do |htaccess|
         htaccess_content.each_line do |line|
-          htaccess.puts(line) unless line.include?("-latest-")
+          htaccess.puts(line) unless line.include?("-latest")
         end
         __send__("#{target_namespace}_targets").each do |target|
           redirect_url = built_package_url(target_namespace, target)