ovn ftbfs in jammy with -march=x86-64-v3

[Matthias Klose]

see
https://launchpadlibrarian.net/604217050/buildlog_ubuntu-jammy-amd64.ovn_22.03.0-0ubuntu1_BUILDING.txt.gz

[...]
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## Test results. ##
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ERROR: 675 tests were run,
3 failed unexpectedly.
512 tests were skipped.
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## testsuite.log was created. ##
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[...]

OVN northd

897: ovn -- check CoPP config -- ovn-northd -- dp-groups=yes FAILED (ovn-northd.at:3287)
898: ovn -- check CoPP config -- ovn-northd -- dp-groups=no FAILED (ovn-northd.at:3287)
927: northd ssl file change -- ovn-northd -- dp-groups=no ok

## ------------- ##
## Test results. ##
## ------------- ##

ERROR: All 3 tests were run,
2 failed unexpectedly.
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## testsuite.log was created. ##
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