Describe the issue

getrawmempool verbose mode only returns "size" rather than "size" and "disksize" (the size on disk for segwit transactions)

Can you reliably reproduce the issue?

If so, please list the steps to reproduce below:

1. Run getrawmempool with verbose set to true
2. Notice it only gives size

Expected behaviour

It should show:

1. effective feerate "size" (ceil(weight/4))
2. disk size "disksize" (total number of bytes in the serialized segwit transaction. (since "disksize" and "size" will be equal for non-segwit transactions, "disksize" should only appear for segwit transactions)

Actual behaviour

It shows size only (effective size for fees ceil(weight/4))

Screenshots.

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What version of bitcoin-core are you using?

0.14.2