https://jira.hyperledger.org/browse/FAB-1547

With this change the fabric has basic support for create / join
chain begun with the implementation of CSCC (configuraton system
chaincode) in https://jira.hyperledger.org/browse/FAB-1022.

Some todos remain for follow up CRs
  . docker based commands to channel-setup.md
  . CONFIGURATION_TRANSACTION validation - https://jira.hyperledger.org/browse/FAB-1639
  . further MSP integration (still uses default MSP)
  . absorption of deliver client management into gossip later - https://jira.hyperledger.org/browse/FAB-1580
  . adding specific configuration items to channel create - https://jira.hyperledger.org/browse/FAB-1642



Steps to test chain create / join below. All commands assume shell
in "fabric/" directory.

Vagrant window 1 - start orderer
  cd orderer
  ORDERER_GENERAL_LOGLEVEL=debug ./orderer

Vagrant window 2 - ask orderer to create a chain
  cd peer
  peer channel create -c myc1

  #on successful creation, a genesis block myc1.block is saved
  #in the same directory

Vagrant window 3 - start the peer without **TEST_CHAINID**
                   (basically in a "chainless" mode)

  #to start with a clean env do "rm -rf /var/hyperledger/*"
  cd peer
  peer node start --peer-defaultchain=false

  #in "--peer-defaultchain=false" mode the peer has to join
  #chains to create leader and do transactions. It does not
  #have a default chain or ledger (the **TEST_CHAINID** chain)

Vagrant window 4 - ask peer to join a chain
  cd peer
  peer channel join -b myc1.block

At this point we can issue transactions

Vagrant window 2 - deploy a chaincode to myc1
  cd peer
  peer chaincode deploy -C myc1 -n mycc -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 -c '{"Args":["init","a","100","b","200"]}'

  #note the use of "-C myc1"
  #wait for 10 secs or so

Vagrant window 2 - query chaincode
  cd peer
  peer chaincode query -C myc1 -n mycc -c '{"Args":["query","a"]}'

Change-Id: I7d1d04e8a207eb57597a1e6eb8b986e1080e7811
Signed-off-by: Srinivasan Muralidharan <muralisr@us.ibm.com>