tests: add test for listing files to be included

and don't error if etc/apk/keys directory is missing

enabled an automatic merge when the pipeline for bcf167bd succeeds

aborted the automatic merge because target branch was updated

added 2 commits

• 4ee9eb3d - 1 commit from branch alpine:master
• bfdc370e - tests: add test for listing files to be included

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added 2 commits

• 32933660 - ci: add lddtree
• 2a8d5f78 - tests: add test for listing files to be included

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added 1 commit

• 8770bfd5 - tests: add test for listing files to be included

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merged