resource/aws_kinesis_firehose_delivery_stream: Add elasticsearch_conf…

…iguration cluster_endpoint argument + other plan-time validations (#12484)

Output from acceptance testing (failure related to #14801, which is pending SDK release):

```
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_HiveJsonSerDe_Empty (117.70s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3KinesisStreamSource (120.98s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3basic (138.97s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_ExternalUpdate (139.32s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_ParquetSerDe_Empty (147.64s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3WithCloudwatchLogging (151.49s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_disappears (163.31s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_ErrorOutputPrefix (168.98s)
--- FAIL: TestAccAWSKinesisFirehoseDeliveryStream_basic (170.08s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3KmsKeyArn (178.69s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_ProcessingConfiguration_Empty (182.19s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_OpenXJsonSerDe_Empty (182.93s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_OrcSerDe_Empty (183.27s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3basic (188.71s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_Deserializer_Update (193.04s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_Serializer_Update (196.71s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_DataFormatConversionConfiguration_Enabled (196.89s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3basicWithTags (205.97s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3_KinesisStreamSource (99.58s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3basicWithSSE (248.87s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_s3ConfigUpdates (263.69s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ExtendedS3Updates (169.93s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_SplunkConfigUpdates (161.74s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_missingProcessingConfiguration (133.82s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_RedshiftConfigUpdates (512.06s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ElasticsearchConfigUpdates (753.17s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ElasticsearchConfigEndpointUpdates (753.32s)
--- PASS: TestAccAWSKinesisFirehoseDeliveryStream_ElasticsearchWithVpcConfigUpdates (1437.39s)
```