ENGCOM-3470: Changes cache hosts warning / critical levels and continue on multiple hosts #18852

 - Merge Pull Request #18852 from wiardvanrij/magento2:varnishpurge
 - Merged commits:
   1. a8f662e
   2. 04aa94e
   3. 0ab520a
   4. fb5a9d1
   5. 7f2c079
   6. d74640a
   7. 9a5bc5f
   8. de6af27
   9. e95de00

Author: magento-engcom-team

app/code/Magento/CacheInvalidate/Model/PurgeCache.php

@@ -140,7 +140,6 @@ private function sendPurgeRequestToServers($socketAdapter, $servers, $formattedT
         $errorCount = count($unresponsiveServerError);
 
         if ($errorCount > 0) {
-
             $loggerMessage = implode(" ", $unresponsiveServerError);
 
             if ($errorCount == count($servers)) {
@@ -150,7 +149,7 @@ private function sendPurgeRequestToServers($socketAdapter, $servers, $formattedT
                 );
                 return false;
             }
-            
+
             $this->logger->warning(
                 'Unresponsive cache server(s) hit' . $loggerMessage,
                 compact('server', 'formattedTagsChunk')

lib/internal/Magento/Framework/Cache/InvalidateLogger.php

@@ -10,6 +10,9 @@
 use Magento\Framework\App\Request\Http as HttpRequest;
 use Psr\Log\LoggerInterface as Logger;
 
+/**
+ * Invalidate logger cache.
+ */
 class InvalidateLogger
 {
     /**
@@ -34,6 +37,7 @@ public function __construct(HttpRequest $request, Logger $logger)
 
     /**
      * Logger invalidate cache
+     *
      * @param mixed $invalidateInfo
      * @return void
      */
@@ -44,6 +48,7 @@ public function execute($invalidateInfo)
 
     /**
      * Make extra data to logger message
+     *
      * @param mixed $invalidateInfo
      * @return array
      */