#7178 retry building Kafka image because of unstable errors from that image build

Fixes #7587

qa/integration/services/kafka_service.rb

@@ -1,16 +1,21 @@
 require_relative "service"
 require "docker"
+require "logstash/devutils/rspec/logstash_helpers"
 
 class KafkaService < Service
+  include LogStashHelper
+
   def initialize(settings)
     super("kafka", settings)
   end
 
   def setup
-    @kafka_image = Docker::Image.build_from_dir(File.expand_path("../kafka_dockerized", __FILE__))
-                     .insert_local(
-                       'localPath' => File.join(TestSettings::FIXTURES_DIR, "how_sample.input"),
-                       'outputPath' => '/')
+    try(20) do
+      @kafka_image = Docker::Image.build_from_dir(File.expand_path("../kafka_dockerized", __FILE__))
+                       .insert_local(
+                         'localPath' => File.join(TestSettings::FIXTURES_DIR, "how_sample.input"),
+                         'outputPath' => '/')
+    end
     @kafka_container = Docker::Container.create(:Image => @kafka_image.id,
                                                 :HostConfig => {
                                                   :PortBindings => {

qa/integration/services/service_container.rb

@@ -1,8 +1,10 @@
 require_relative "service"
 require "docker"
+require "logstash/devutils/rspec/logstash_helpers"
 
 # Represents a service running within a container.
 class ServiceContainer < Service
+  include LogStashHelper
 
   def initialize(name, settings)
     super(name, settings)
@@ -47,7 +49,9 @@ class ServiceContainer < Service
   end
 
   def build_image
-    @image = Docker::Image.build_from_dir(@image_context)
+    try(20) do
+      @image = Docker::Image.build_from_dir(@image_context)
+    end
   end
 
   def start_container