fix(cli): add impersonate_user to db import

[chessman]

SUMMARY

When importing a directory using superset import-directory command, it should respect the impersonate_user flag specified in the database yaml definition.

TESTING INSTRUCTIONS

Import a database that supports this flag and verify that this flag is enabled.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

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[mistercrunch]

Makes me wonder whether other fields may get lost while doing export/import round trips.

[rusackas]

I believe @yousoph and @eschutho are taking stock of bits that are not part of import/export but ought to be.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.70%. Comparing base (76d897e) to head (a5ed1e2).
⚠️ Report is 2203 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #29522       +/-   ##
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+ Coverage   60.48%   83.70%   +23.21%     
===========================================
  Files        1931      527     -1404     
  Lines       76236    38053    -38183     
  Branches     8568        0     -8568     
===========================================
- Hits        46114    31851    -14263     
+ Misses      28017     6202    -21815     
+ Partials     2105        0     -2105     

Flag	Coverage Δ
hive	∅ <100.00%> (∅)
javascript	?
mysql	∅ <100.00%> (?)
postgres	∅ <100.00%> (?)
presto	∅ <100.00%> (∅)
python	∅ <100.00%> (∅)
sqlite	∅ <100.00%> (?)
unit	∅ <100.00%> (∅)

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[eschutho]

Suggested change

	"impersonate_user"
	"impersonate_user",

[eschutho]

Can we add a unit test with the new param? Here's an example in tests/unit_tests/databases/commands/importers/v1/import_test.py

def test_import_database_with_user_impersonation(
    mocker: MockerFixture,
    session: Session,
) -> None:
    """
    Test importing a database that is managed externally.
    """
    from superset import security_manager
    from superset.commands.database.importers.v1.utils import import_database
    from superset.models.core import Database
    from tests.integration_tests.fixtures.importexport import database_config

    mocker.patch.object(security_manager, "can_access", return_value=True)

    engine = db.session.get_bind()
    Database.metadata.create_all(engine)  # pylint: disable=no-member

    config = copy.deepcopy(database_config)
    config["impersonate_user"] = True

    database = import_database(config)
    assert database.impersonate_user is True
    ```

[rusackas]

Approving CI. Ping me if it passes and needs a merge!

[chessman]

@rusackas This error looks unrelated to my changes.

>       conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
E       sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not translate host name "host1" to address: Temporary failure in name resolution
E       
E       (Background on this error at: https://sqlalche.me/e/14/e3q8)

[rusackas]

Running CI. 🤞 Ping me if it turns green :D

[chessman]

@rusackas it's green!

[eschutho]

Thanks @chessman!