S3A proxy to use proxy protocol to set port

if (conf.getBoolean(SECURE_CONNECTIONS, DEFAULT_SECURE_CONNECTIONS)) {
          LOG.warn("Proxy host set without port. Using HTTPS default 443");
          awsConf.setProxyPort(443);
        } else {
          LOG.warn("Proxy host set without port. Using HTTP default 80");
          awsConf.setProxyPort(80);
        }