ceph: hex dump corrupt server data to KERN_DEBUG

Also, print fsid using standard format, NOT hex dump.

Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 9b9ce14..dfb509f 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2681,6 +2681,7 @@
 
 bad:
 	pr_err("ceph_handle_caps: corrupt message\n");
+	ceph_msg_dump(msg);
 	return;
 }