naming improvements

Author: attilameszaros-form3

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/internal/OneTimerEvent.java renamed to operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/internal/OnceTimerEvent.java

@@ -6,11 +6,11 @@
 import java.util.Collections;
 import java.util.List;
 
-public class OneTimerEvent extends AbstractEvent {
+public class OnceTimerEvent extends AbstractEvent {
 
   private final List<Event> events;
 
-  public OneTimerEvent(
+  public OnceTimerEvent(
       String relatedCustomResourceUid, EventSource eventSource, List<Event> events) {
     super(relatedCustomResourceUid, eventSource);
     this.events = events;

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/internal/TimerEventSource.java

@@ -84,7 +84,7 @@ public void run() {
         eventHandler.handleEvent(new RepeatedTimerEvent(customResourceUid, TimerEventSource.this));
       } else {
         eventHandler.handleEvent(
-            new OneTimerEvent(customResourceUid, TimerEventSource.this, events));
+            new OnceTimerEvent(customResourceUid, TimerEventSource.this, events));
       }
     }
   }