FAB-6309 fix incorrect npm install param

To make "npm install" only install the production dependencies,
command needs to pass "--production" but is currently passing
"-production". the parameter with the single dash will be ignored

Change-Id: I0275b30beeb66362996977a80ca7a667ee825bfb
Signed-off-by: Jim Zhang <jzhang@us.ibm.com>

core/chaincode/platforms/node/platform.go

@@ -177,7 +177,7 @@ func (nodePlatform *Platform) GenerateDockerBuild(cds *pb.ChaincodeDeploymentSpe
 	codepackage := bytes.NewReader(cds.CodePackage)
 	binpackage := bytes.NewBuffer(nil)
 	err := util.DockerBuild(util.DockerBuildOptions{
-		Cmd:          fmt.Sprint("cp -R /chaincode/input/src/* /chaincode/output && cd /chaincode/output && npm install -production"),
+		Cmd:          fmt.Sprint("cp -R /chaincode/input/src/* /chaincode/output && cd /chaincode/output && npm install --production"),
 		InputStream:  codepackage,
 		OutputStream: binpackage,
 	})