Restrict permissions on patching logfiles

This update sets restricted permissions on patching logfiles.

Change-Id: I922c6d278dc747c186288a15d12369bbddb40bea
Partial-Bug: 1836632
Signed-off-by: Don Penney <don.penney@windriver.com>

cgcs-patch/centos/build_srpm.data

@@ -1 +1 @@
-TIS_PATCH_VER=27
+TIS_PATCH_VER=28

cgcs-patch/cgcs-patch/cgcs_patch/patch_functions.py

@@ -83,11 +83,19 @@ def configure_logging(logtofile=True, level=logging.INFO):
         main_log_handler = logging.FileHandler(logfile)
         main_log_handler.setFormatter(formatter)
         LOG.addHandler(main_log_handler)
+        try:
+            os.chmod(logfile, 0o640)
+        except Exception:
+            pass
 
         auditLOG.setLevel(level)
         api_log_handler = logging.FileHandler(apilogfile)
         api_log_handler.setFormatter(formatter)
         auditLOG.addHandler(api_log_handler)
+        try:
+            os.chmod(apilogfile, 0o640)
+        except Exception:
+            pass
 
         # Log uncaught exceptions to file
         sys.excepthook = handle_exception