Correctly setup default unlimited maxFormKeys as default

[olamy]

Signed-off-by: Olivier Lamy olamy@apache.org

Testing done

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[olamy]

btw those unlimited values could be dangerous (ddos attack) but I have no real idea about what sort of possible values could work for Jenkins (1000 is already a lot)

[olamy]

from #393 (comment)

looks to be fixed as well with the next PR #395