[FAB-9843] Improve e2e_cli multi-endorse
[FAB-9843] Improve e2e_cli multi-endorse

This CR removes the hard-coded invoke operation against peer0.org1
and peer0.org2, updating chaincodeInvoke to accept pairs of peer
and org parameters to specify the peers to request endorsements
from.

This CR also ports a number of cleanup items from the BYFN scripts
to make the script more readable (each peer operation now takes
in a peer and org argument) and make the output more consistent.

Change-Id: Idf41f642006af5a9d5d13e9311b03b4b2469a965
Signed-off-by: Will Lahti <f19a2779710675aad3df5c81e4ecfde11707e3aa@us.ibm.com>

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