Added the ReEncryptInstructionFileResponse class

Author: Anirav Kareddy

src/main/java/software/amazon/encryption/s3/internal/ReEncryptInstructionFileResponse.java

@@ -0,0 +1,27 @@
+package software.amazon.encryption.s3.internal;
+
+/** Response object for re-encrypting instruction files.
+ * Contains the bucket, key, and instruction file suffix of the re-encrypted instruction file in S3.
+ */
+
+public class ReEncryptInstructionFileResponse {
+  private final String bucket;
+  private final String key;
+  private final String instructionFileSuffix;
+
+  public ReEncryptInstructionFileResponse(String bucket, String key, String instructionFileSuffix) {
+    this.bucket = bucket;
+    this.key = key;
+    this.instructionFileSuffix = instructionFileSuffix;
+  }
+  public String Bucket() {
+    return bucket;
+  }
+  public String Key() {
+    return key;
+  }
+  public String InstructionFileSuffix() {
+    return instructionFileSuffix;
+  }
+}
+