Correcting imports

Signed-off-by: Jagadeesh <iamjag08@gmail.com>

Author: iamjag08

common/src/main/java/org/opensearch/ml/common/agent/MLAgent.java

@@ -12,7 +12,14 @@
 
 import java.io.IOException;
 import java.time.Instant;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
 
 import org.opensearch.Version;
 import org.opensearch.core.common.io.stream.StreamInput;