hudi supports custom catalog name, spark_catalog is not mandatory

```scala
val spark = SparkSession.builder().master("local").enableHiveSupport()
.config("spark.sql.extensions",
"org.apache.iceberg.spark.extensions.IcebergSparkSessionExtensions," +
"org.apache.spark.sql.hudi.HoodieSparkSessionExtension")
.config("spark.sql.catalog.spark_catalog", "org.apache.iceberg.spark.SparkSessionCatalog")
.config("spark.sql.catalog.spark_catalog.type", "hive")

.config("spark.sql.catalog.hudi", "org.apache.spark.sql.hudi.catalog.HoodieCatalog")

.getOrCreate()
```

iceberg catalog name use spark_catalog，hudi catalog name cannot use spark_catalog。Can hudi use another name?

Hudi For Spark 3.2, the additional spark_catalog config is required: --conf 'spark.sql.catalog.spark_catalog=org.apache.spark.sql.hudi.catalog.HoodieCatalog'