[FAB-8815] Interface for cc convenience layer
[FAB-8815] Interface for cc convenience layer

This change set introduces an interface to be used by the chaincode developer
to create and modify key-level endorsement policies expressed as a logical AND
of "<ORG>.role" principals.

Change-Id: I54d8944c20e4559047895a5ee927b9d6c1707ebd
Signed-off-by: Alessandro Sorniotti <f32b00f17cd31d4086a37e20e6815a9429f62787@sopit.net>
Signed-off-by: Matthias Neugschwandtner <e570e5dc4777cc7f93f0f6ac0d7f23388ed99ae3@zurich.ibm.com>

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