storage: Un-Ignore testRotateFromCustomerEncryptionToKmsKeyWithCustomerEncryption (#4936)

Author: JesseLovelace

google-cloud-clients/google-cloud-storage/src/test/java/com/google/cloud/storage/it/ITStorageTest.java

@@ -120,7 +120,6 @@
 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Test;
 
 public class ITStorageTest {
@@ -1293,7 +1292,6 @@ public void testRotateFromCustomerEncryptionToKmsKey() {
   }
 
   @Test
-  @Ignore
   public void testRotateFromCustomerEncryptionToKmsKeyWithCustomerEncryption() {
     String sourceBlobName = "test-copy-blob-encryption-key-source";
     BlobId source = BlobId.of(BUCKET, sourceBlobName);