[aes/dv] updated testplan according to AI from V2 review
[aes/dv] updated testplan according to AI from V2 review

Signed-off-by: Rasmus Madsen <11e53b74c72d2fddbacc59264817a2c86b087c70@wdc.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan