def configure_proxy(proxy_setting, exceptions)
      ENV['HTTP_PROXY'] = proxy_setting
      ENV['http_proxy'] = proxy_setting
      ENV['HTTPS_PROXY'] = proxy_setting
      ENV['https_proxy'] = proxy_setting
      ENV['NO_PROXY'] = exceptions
      ENV['no_proxy'] = exceptions
      true
    end
def configure_proxy(proxy_setting, exceptions)
      ENV['HTTP_PROXY'] = proxy_setting
      ENV['http_proxy'] = proxy_setting
      ENV['HTTPS_PROXY'] = proxy_setting
      ENV['https_proxy'] = proxy_setting
      ENV['NO_PROXY'] = exceptions
      ENV['no_proxy'] = exceptions
      true
    end
Enable the use of an HTTP proxy for this process and its subprocesses

 === Parameters
 proxy_setting(String):: Proxy to use
 exceptions(String):: Comma-separated list of proxy exceptions (e.g. metadata server)

 === Return
 true:: Always return true