Fix equals methods for new Override classes

Author: Evie Boland

hbase-client/src/main/java/org/apache/hadoop/hbase/client/replication/NamespaceOverride.java

@@ -31,4 +31,15 @@ public NamespaceOverride(String sinkNamespace) {
   public String getSinkNamespace() {
     return sinkNamespace;
   }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    } else if (!(o instanceof NamespaceOverride)) {
+      return false;
+    }
+    NamespaceOverride other = (NamespaceOverride) o;
+    return other.getSinkNamespace().equals(getSinkNamespace());
+  }
 }

hbase-client/src/main/java/org/apache/hadoop/hbase/client/replication/TableNameOverride.java

@@ -32,4 +32,15 @@ public TableNameOverride(TableName sinkTableName) {
   public TableName getSinkTableName() {
     return sinkTableName;
   }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    } else if (!(o instanceof TableNameOverride)) {
+      return false;
+    }
+    TableNameOverride other = (TableNameOverride) o;
+    return other.getSinkTableName().equals(getSinkTableName());
+  }
 }