Support empty $PHP_VERSION for default php-fpm service

root/etc/e-smith/templates/etc/php-fpm.d/www.conf/00Default00Header

@@ -1,7 +1,8 @@
 {
 use esmith::ConfigDB;
 my $c = esmith::ConfigDB->open_ro || die "Couldn't opeen the configuration database\n";
-my $php = $c->get( 'php' . $PHP_VERSION . '-php-fpm' );
+my $srv = ( $PHP_VERSION ne '') ? 'php' . $PHP_VERSION . '-php-fpm' : 'php-fpm';
+my $php = $c->get( $srv );
 if ($php){
   $MemoryLimit       = $php->prop('MemoryLimit')       || '128M';
   $MaxExecutionTime  = $php->prop('MaxExecutionTime')  || '30';