hardening: use default ptrace scope on buildservers

Making 'kernel.yama.ptrace_scope' more strict by setting it to '2' causes failures in elfutils' test suite. While tentatively helpful on other servers, it seems kind of unnecessary for a build server.

Fixes: #424 (closed) (to be reopened though, if more restrictions are found)

requested review from @jelle and @anthraxx

This also fixes ~540 gcc testsuite failures!

approved this merge request

approved this merge request

added 2 commits

• fa46bb38 - 1 commit from branch master
• f6cbd3f8 - hardening: use default ptrace scope on buildservers

Compare with previous version

enabled an automatic merge when the pipeline for f6cbd3f8 succeeds

merged

mentioned in commit 9b6a3d6c