The audience-list assertion used \`grep -qF "- tenant-test-..."\`.
Because the pattern begins with a dash, grep treats the leading \`-\`
as an option flag, aborting the test with \`grep: invalid option --
' '\` before the actual match ever runs. Insert an explicit \`--\`
end-of-options separator so the YAML list-item pattern is passed as a
pattern rather than a flag.
Custom-config counterpart is unaffected — its grep patterns do not
start with a dash.
Signed-off-by: Ivan Okhotnikov <ivan.okhotnikov@aenix.io>