Change "System error in open: Permission denied" to just "System erro…

…r in open"

 - there is no need to distinguish this from other ways that the data node
could temporarily fail to open a file.

reports.py

@@ -87,7 +87,7 @@ def transfer_error_counts( sincelines ):
  "Unable to establish SSL connection", "Connection closed at byte",
  "The GSI XIO driver failed to establish a secure connection.",
  "File corruption detected", "ERROR 404", "No such file or directory",
- "System error in open: Permission denied",
+ "System error in open",
  "sdget_status=7", # i.e. sdget.sh was killed by SIGINT or SIGTERM.
  # This normally means that the daemon died.
  "No data received", "Operation not permitted",