Merge branch '6366-lower-the-entropy-test-value-in-bind-plugin-to-200' into 'develop'

Resolve "Lower the entropy test value in BIND plugin to 200"

Closes #6366

See merge request ispconfig/ispconfig3!1619

server/plugins-available/bind_plugin.inc.php

@@ -90,7 +90,7 @@ class bind_plugin {
 		if (!file_exists($dns_config['bind_zonefiles_dir'].'/'.$this->zone_file_prefix().$domain)) return false;
 
 		//* Check Entropy
-		if (file_get_contents('/proc/sys/kernel/random/entropy_avail') < 400) {
+		if (file_get_contents('/proc/sys/kernel/random/entropy_avail') < 200) {
 			$app->log('DNSSEC ERROR: We are low on entropy. Not generating new Keys for '.$domain.'. Please consider installing package haveged.', LOGLEVEL_WARN);
 			echo "DNSSEC ERROR: We are low on entropy. Not generating new Keys for $domain. Please consider installing package haveged.\n";
 			return false;