runc update: systemd v2 driver ignores --cpu-quota if period was not set #2463
Description
Repro:
# make sure no quota/period set in config.json
runc run -d --console-socket $CONSOLE_SOCKET test_update
# update the quota alone, no old values were set
runc update --cpu-quota 30000 test_update
# check the systemd value
systemctl show --property CPUQuotaPerSecUSec runc-cgroups-integration-test.scope
infinity
It should be 300ms not infinity.
This bug was always there because we weren't checking systemd values in our int tests.