-Make url parsing greedy so as not to be confused by too many colons

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@9318 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/share/xcat/netboot/rh/dracut/xcatroot

@@ -4,7 +4,7 @@ RWDIR=.statelite
 XCATMASTER=$XCAT
 
 if [ ! -z "$imgurl" ]; then
-	if [ xhttp = x${imgurl%:*} ]; then
+	if [ xhttp = x${imgurl%%:*} ]; then
 		NFS=0
 		FILENAME=${imgurl##*/}
 		while [ ! -r "$FILENAME" ]; do
@@ -14,7 +14,7 @@ if [ ! -z "$imgurl" ]; then
 				sleep 27
 			fi
 		done
-	elif [ xnfs = x${imgurl%:*} ]; then
+	elif [ xnfs = x${imgurl%%:*} ]; then
 		NFS=1
 		SERVER=${imgurl#nfs:}
 		SERVER=${SERVER#/}