Retrieve public MSP information from channel config for fabric driver resolvers

[davidkel]

For the fabric driver resolvers you might have an entry such as

    endpoint:
      resolvers: 
      - name: approver
        domain: org1.example.com
        identity:
          mspID: Org1MSP
          path: /home/dave/github-cloned/fabric-smart-client/samples/fabric/iou/testdata/fabric.default/crypto/peerOrganizations/org1.example.com/users/approver@org1.example.com/msp/signcerts/approver@org1.example.com-cert.pem

Currenly the path either refers to the the public cert of the signer or the nodes public msp (ie without any private keys). Access to the public MSP is required in case the signer certificate is sanitized by fabric and thus doesn't match the certificate stored in the MSP file system.

It would be better to obtain the public MSP from the channel configuration instead

[adecaro]

Hi @davidkel , I think it is not possible to do what the issue asks because this MSP contains the approver's PK which is not available on the ledger. The MSPs on the ledger contains only the root and intermediate CA certs.

If you agree, I will close this issue.

[davidkel]

ok, then I think we need to remove path support to individual pem files otherwise others will hit the same problem where fabric might change the pem