fix: Set locale in tests to be able to run locally. Remove logging dependency fixed versions in parent pom.xml to prevent conflicts with spring boot. Update license headers. Update urm diagrams.

queue-based-load-leveling/etc/queue-based-load-leveling.urm.puml

@@ -0,0 +1,44 @@
+@startuml
+package com.iluwatar.queue.load.leveling {
+  class App {
+    - LOGGER : Logger {static}
+    - SHUTDOWN_TIME : int {static}
+    + App()
+    + main(args : String[]) {static}
+  }
+  class Message {
+    - msg : String
+    + Message(msg : String)
+    + getMsg() : String
+    + toString() : String
+  }
+  class MessageQueue {
+    - LOGGER : Logger {static}
+    - blkQueue : BlockingQueue<Message>
+    + MessageQueue()
+    + retrieveMsg() : Message
+    + submitMsg(msg : Message)
+  }
+  class ServiceExecutor {
+    - LOGGER : Logger {static}
+    - msgQueue : MessageQueue
+    + ServiceExecutor(msgQueue : MessageQueue)
+    + run()
+  }
+  interface Task {
+    + submit(Message) {abstract}
+  }
+  class TaskGenerator {
+    - LOGGER : Logger {static}
+    - msgCount : int
+    - msgQueue : MessageQueue
+    + TaskGenerator(msgQueue : MessageQueue, msgCount : int)
+    + run()
+    + submit(msg : Message)
+  }
+}
+MessageQueue -->  "-blkQueue" Message
+ServiceExecutor -->  "-msgQueue" MessageQueue
+TaskGenerator -->  "-msgQueue" MessageQueue
+TaskGenerator ..|> Task 
+@enduml