Adding postgresql template option when executing db:test:clone_structure

Specify the template to use in config/database.yml, e.g.

  test:
    adapter: postgresql
    template: template_postgis

If no template is specified, postgresql defaults to template1

activerecord/lib/active_record/railties/databases.rake

@@ -409,7 +409,7 @@ db_namespace = namespace :db do
         ENV['PGHOST']     = abcs["test"]["host"] if abcs["test"]["host"]
         ENV['PGPORT']     = abcs["test"]["port"].to_s if abcs["test"]["port"]
         ENV['PGPASSWORD'] = abcs["test"]["password"].to_s if abcs["test"]["password"]
-        `psql -U "#{abcs["test"]["username"]}" -f #{Rails.root}/db/#{Rails.env}_structure.sql #{abcs["test"]["database"]}`
+        `psql -U "#{abcs["test"]["username"]}" -f #{Rails.root}/db/#{Rails.env}_structure.sql #{abcs["test"]["database"]} #{abcs["test"]["template"]}`
       when "sqlite", "sqlite3"
         dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"]
         `#{abcs["test"]["adapter"]} #{dbfile} < #{Rails.root}/db/#{Rails.env}_structure.sql`