[HUDI-1136] Add back findInstantsAfterOrEquals to the HoodieTimeline class.

hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieDefaultTimeline.java

@@ -132,6 +132,13 @@ public class HoodieDefaultTimeline implements HoodieTimeline {
         details);
   }
 
+  @Override
+  public HoodieDefaultTimeline findInstantsAfterOrEquals(String commitTime, int numCommits) {
+    return new HoodieDefaultTimeline(instants.stream()
+        .filter(s -> HoodieTimeline.compareTimestamps(s.getTimestamp(), GREATER_THAN_OR_EQUALS, commitTime))
+        .limit(numCommits), details);
+  }
+
   @Override
   public HoodieDefaultTimeline findInstantsBefore(String instantTime) {
     return new HoodieDefaultTimeline(instants.stream()

hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieTimeline.java

@@ -140,6 +140,11 @@ public interface HoodieTimeline extends Serializable {
    */
   HoodieTimeline filterPendingCompactionTimeline();
 
+  /**
+   * Create a new Timeline with all the instants after startTs.
+   */
+  HoodieTimeline findInstantsAfterOrEquals(String commitTime, int numCommits);
+
   /**
    * Create a new Timeline with instants after startTs and before or on endTs.
    */