AAF fix Todos from MLL

[ckunki]

Ticket #212 requested to move parts of MLL repository to AAF including unit tests.

As a cleanup step, the current ticket requests to fix the TODOs contained in some of the moved files:

• test_query_loop_integration.py: build an assert which can find a list of regex as a subsequence of a list of strings,
• test_find_object_proxies.py: DataPartition, Dataset, SQLStageInputOutput, arbitrary object
• python_query_result.py: dtype: columns=[column.name.name for column in self._columns])
• query_loop.lua: cleanup after query error
• create_query_loop.sql: cleanup after query error

[tkilias]

Cleanup after query error has its own epic

[tkilias]

advanced-analytics-framework/exasol/analytics/query_handler/query/result/python_query_result.py

Line 68 in f4fef21

) # TODO dtype

: Could lead to errors, when pandas type induction doesn't work properly. Solution idea: Define mapping between Exasol Types and pandas DTypes based on the UDF Type mapping. Ask @tomuben about the Type Mapping in the UDFs.

[tkilias]

the remaining are something for a Kehrwoche. However, the dtype we probably can also do in a Kehrwoche.