add `encryptionformat` to volume reponse for admins

[DaanHoogland]

ISSUE TYPE

• Enhancement Request

COMPONENT NAME

API/UI

CLOUDSTACK VERSION

CONFIGURATION

OS / ENVIRONMENT

SUMMARY

On requests like listVolumes or updateVolume the output should include encryption format (at least for admins)
see the discussion in #8643 (comment)

STEPS TO REPRODUCE

EXPECTED RESULTS

ACTUAL RESULTS

[weizhouapache]

to be consistent with volume table, maybe better to use encryptformat ?

[DaanHoogland]

to be consistent with volume table, maybe better to use encryptformat ?

thanks, updated