Maid-304_trim_pmid_manager_account

create a new message content type : DataNameAndSizeAndSpaceAndReturnCode
for the DeleteResponse from PmidNode to PmidManager
the original DataNameAndSpaceAndReturnCode was defined in nfs_client, although it is a message between PmidNode and PmidManager.
It seems ReturnCode only got defined under nfs_client.
I assumed it is a policy to do so, so just followed it.