[fix](iceberg) fix iceberg catalog bug and p2 test cases (apache#32898)

1. Fix iceberg catalog bug

    This PR apache#30198 change the logic of `IcebergHMSExternalCatalog.java`,
    to get locationUrl by calling hive metastore's `getCatalog()` method.
    But this method only exists in hive 3+. So it will fail if we using hive 2.x.

    I temporary remove this logic, because this logic is only used from iceberg table writing.
    Which is still under development. We will rethink this logic later.

2. Fix test cases

    Some of P2 test cases missed `order_qt`. And because the output format of the floating point
    type is changed, some result in `out` files need to be regenerated.

fe/fe-core/src/main/java/org/apache/doris/datasource/iceberg/IcebergHMSExternalCatalog.java

@@ -17,16 +17,10 @@
 
 package org.apache.doris.datasource.iceberg;
 
-import org.apache.doris.common.Config;
-import org.apache.doris.common.security.authentication.AuthenticationConfig;
-import org.apache.doris.common.security.authentication.HadoopUGI;
 import org.apache.doris.datasource.CatalogProperty;
-import org.apache.doris.datasource.hive.HMSCachedClient;
-import org.apache.doris.datasource.hive.HiveMetadataOps;
 import org.apache.doris.datasource.property.PropertyConverter;
 import org.apache.doris.datasource.property.constants.HMSProperties;
 
-import org.apache.hadoop.hive.conf.HiveConf;
 import org.apache.iceberg.CatalogProperties;
 import org.apache.iceberg.hive.HiveCatalog;
 
@@ -51,20 +45,8 @@ protected void initCatalog() {
         Map<String, String> catalogProperties = new HashMap<>();
         String metastoreUris = catalogProperty.getOrDefault(HMSProperties.HIVE_METASTORE_URIS, "");
         catalogProperties.put(CatalogProperties.URI, metastoreUris);
-        HiveConf hiveConf = new HiveConf();
-        for (Map.Entry<String, String> kv : catalogProperty.getHadoopProperties().entrySet()) {
-            hiveConf.set(kv.getKey(), kv.getValue());
-        }
-        hiveConf.set(HiveConf.ConfVars.METASTORE_CLIENT_SOCKET_TIMEOUT.name(),
-                String.valueOf(Config.hive_metastore_client_timeout_second));
-        HadoopUGI.tryKrbLogin(this.getName(), AuthenticationConfig.getKerberosConfig(hiveConf,
-                AuthenticationConfig.HADOOP_KERBEROS_PRINCIPAL,
-                AuthenticationConfig.HADOOP_KERBEROS_KEYTAB));
-        initS3Param(hiveConf);
-        HMSCachedClient cachedClient = HiveMetadataOps.createCachedClient(hiveConf, 1, null);
-        String location = cachedClient.getCatalogLocation("hive");
-        catalogProperties.put(CatalogProperties.WAREHOUSE_LOCATION, location);
         hiveCatalog.initialize(icebergCatalogType, catalogProperties);
         catalog = hiveCatalog;
     }
 }
+