[FAB-2487] Change test string to comply with rule

Commit 94d7e9 introduced a more strict rule of channel name.
This CR changes channel name in multichain test to comply with it.

Change-Id: I9dbca9e08c55b0d289b0340f3f52325e41827ac9
Signed-off-by: Jay Guo <guojiannan1101@gmail.com>
Signed-off-by: Kostas Christidis <kostas@christidis.io>

orderer/multichain/manager_test.go

@@ -44,7 +44,7 @@ var conf, singleMSPConf, noConsortiumConf *genesisconfig.Profile
 var genesisBlock, singleMSPGenesisBlock, noConsortiumGenesisBlock *cb.Block
 var mockSigningIdentity msp.SigningIdentity
 
-const NoConsortiumChain = "NoConsortiumChain"
+const NoConsortiumChain = "no-consortium-chain"
 
 func init() {
 	logging.SetLevel(logging.DEBUG, "")