rootfs_ipk.bbclass: add keyword "Collected errors" for log error check

Once ipk meet errors, the log will show "Collected errors:\n xxxx ".
so keyword "Collected errors" is more general to catch errors.

Signed-off-by: Yu Ke <ke.yu@intel.com>

meta/classes/rootfs_ipk.bbclass

@@ -85,7 +85,7 @@ rootfs_ipk_log_check() {
         lf_path="$2"
 
 	lf_txt="`cat $lf_path`"
-	for keyword_die in "Cannot find package" "exit 1" "Cannot satisfy the following dependencies" ERR Fail
+	for keyword_die in "exit 1" "Collected errors" ERR Fail
 	do				
 		if (echo "$lf_txt" | grep -v log_check | grep "$keyword_die") >/dev/null 2>&1
 		then