

**Description**

Qubole Hook and Operator do not support `include_header` param for getting results with headers
Add Support for `include_header` get_results(... arguments=[True])
**Use case / motivation**

It's very hard to work with CSV results from db without headers. 
This is super important when using Qubole's databases.

**Are you willing to submit a PR?**

Not sure yet, I can give it a try

**Related Issues**


airflow/providers/qubole/operators/qubole.py
:query: inline query statement
            :macros: macro values which were used in query
        dbexportcmd:
            :mode: Can be 1 for Hive export or 2 for HDFS/S3 export
            :schema: Db schema name assumed accordingly by database if not specified
            :hive_table: Name of the hive table
            :partition_spec: partition specification for Hive table.
            :dbtap_id: data store ID of the target database, in Qubole.
            :db_table: name of the db table
            :db_update_mode: allowinsert or updateonly
            :db_update_keys: columns used to determine the uniqueness of rows
            :export_dir: HDFS/S3 location from which data will be exported.
            :fields_terminated_by: hex of the char used as column separator in the dataset
            :use_customer_cluster: To use cluster to run command
            :customer_cluster_label: the label of the cluster to run the command on
            :additional_options: Additional Sqoop options which are needed enclose options in
                double or single quotes e.g. '--map-column-hive id=int,data=string'
        dbimportcmd:
            :mode: 1 (simple), 2 (advance)
            :hive_table: Name of the hive table
            :schema: Db schema name assumed accordingly by database if not specified
            :hive_serde: Output format of the Hive Table
            :dbtap_id: data store ID of the target database, in Qubole.
            :db_table: name of the db table
            :where_clause: where clause, if any
            :parallelism: number of parallel db connections to use for extracting data
            :extract_query: SQL query to extract data from db. $CONDITIONS must be part
                of the where clause.
            :boundary_query: Query to be used get range of row IDs to be extracted
            :split_column: Column used as row ID to split data into ranges (mode 2)