Merge branch 'pl-full-qualify-podlogs-base-service' into 'master'

Use full qualified class name in pod logs services

See merge request gitlab-org/gitlab!27043

app/services/pod_logs/elasticsearch_service.rb

 # frozen_string_literal: true
 
 module PodLogs
-  class ElasticsearchService < BaseService
+  class ElasticsearchService < PodLogs::BaseService
     steps :check_arguments,
           :check_param_lengths,
           :get_raw_pods,

app/services/pod_logs/kubernetes_service.rb

 # frozen_string_literal: true
 
 module PodLogs
-  class KubernetesService < BaseService
+  class KubernetesService < PodLogs::BaseService
     LOGS_LIMIT = 500.freeze
     REPLACEMENT_CHAR = "\u{FFFD}"