Revert "Fix firewall warnings for integration tests on Mac" (#4175)

This reverts commit 412f366.

The change caused integration tests to fail on a number of
developer macs (both amd64 and arm64).

Signed-off-by: David Enyeart <enyeart@us.ibm.com>

integration/nwo/template/core_template.go

@@ -16,7 +16,7 @@ peer:
   address: 127.0.0.1:{{ .PeerPort Peer "Listen" }}
   addressAutoDetect: true
   listenAddress: 127.0.0.1:{{ .PeerPort Peer "Listen" }}
-  chaincodeListenAddress: 127.0.0.1:{{ .PeerPort Peer "Chaincode" }}
+  chaincodeListenAddress: 0.0.0.0:{{ .PeerPort Peer "Chaincode" }}
   keepalive:
     minInterval: 60s
     client: