[FAB-2726] transform windows-style paths in CC package

change to linux style with '/' in the chaincode package archive
entries. so that it can be accepted by the endorsers.

Change-Id: I27f45ef2c887469c4f46048b2564f163659ebd51
Signed-off-by: Jim Zhang <jzhang@us.ibm.com>

fabric-client/lib/packager/Golang.js

@@ -95,7 +95,7 @@ function findSource(goPath, filePath) {
 				if (entry.stats.isFile() && isSource(entry.path)) {
 
 					var desc = {
-						name: path.relative(goPath, entry.path),
+						name: path.relative(goPath, entry.path).split('\\').join('/'), // for windows style paths
 						fqp: entry.path
 					};