Add a column (connector_wallets_details) in merchant connector account and develop an api (migrate cert) to store the encrypted certificates in the added column.

[ShankarSinghC]

Currently apple pay related details are being stored in the connector metadata, as in future we are going to add apple pay decrypted flow support for ios app we will be collecting the apple pay payment processing certificates as well. As this ppc and ppc key needs to be securely stored, we need to move the existing certificates to a new column which stores the encrypted certificates.