Add stable-2.17 to CI; copy 2.17 ignore.txt files to 2.18

[felixfontein]

SUMMARY

Ref: https://forum.ansible.com/t/ansible-core-devel-bumped-to-2-18-0-dev0-stable-2-17-branch-created/4695

ISSUE TYPE

• Test Pull Request

COMPONENT NAME

CI

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.25%. Comparing base (97c87c8) to head (3ea700d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #100   +/-   ##
=======================================
  Coverage   98.25%   98.25%           
=======================================
  Files          32       32           
  Lines        2351     2351           
  Branches      252      252           
=======================================
  Hits         2310     2310           
  Misses         19       19           
  Partials       22       22           

Flag	Coverage Δ
sanity	27.28% <ø> (ø)
units	98.11% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.