It is required to replace WDB queries by their TAP analogs. The changes should be transparent to the end user and to the unit tests.

Functions to be upgraded:

• list_instruments
• list_surveys
• query_instruments
• query_surveys
• query_main
• query_apex_quicklooks

This partially solves issue #2038. In a follow-up issue, OAuth will be added. I'm going to be working on this. [cc @szampier ]

Related:

• https://archive.eso.org/cms/eso-data/programmatic-access.html
• https://archive.eso.org/programmatic/#TAP