[FAB-15267] Refactor IdentityDeserializer mock
[FAB-15267] Refactor IdentityDeserializer mock

Refactored IdentityDeserializer mock in core/
committer/txvalidator/v14 to generate from local interface.

Change-Id: Ic7c05afbde6799dad61f553990d9c6232f9aaad7
Signed-off-by: Chongxin Luo <7c0175c1e9b282afeb442298363614962e031204@ibm.com>

manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,hyperledger/fabric,manish-sethi/fabric-sidedb,binhn/fabric,stemlending/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,stemlending/fabric,manish-sethi/fabric,muralisrini/fabric,muralisrini/fabric,muralisrini/fabric,binhn/fabric,hyperledger/fabric,manish-sethi/fabric,manish-sethi/fabric-sidedb,binhn/fabric,jimthematrix/fabric,jimthematrix/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,manish-sethi/fabric-sidedb