Implement query committed chaincode with name in channel

[samuelvenzi]

• Implement query committed with name function
• Implement query committed with name unit test
• Add query committed with name to e2e test

Signed-off-by: Samuel Venzi samuel.venzi@me.com

[samuelvenzi]

@bestbeforetoday great! You can leave that with me, I'll try to get that PR in by next week, then. Thanks again for the pointer.