Add trove-guestagnet.conf sample for log rotation

This change adds a configuration sample of guestagent
to use log rotation.

Change-Id: I2f2fb0d42f2f9d674daf3adff8725a365cc1a5b3
Closes-Bug: #1269615

etc/trove/trove-guestagent.conf.sample

@@ -74,6 +74,7 @@ root_grant_option = True
 # Directory and path for log files
 log_dir = /var/log/trove/
 log_file = logfile.txt
+log_config_append = /etc/trove/trove-logging-guestagent.conf
 
 [profiler]
 # If False fully disable profiling feature.

etc/trove/trove-logging-guestagent.conf

@@ -0,0 +1,39 @@
+[loggers]
+keys=root
+
+[handlers]
+keys=file
+
+[formatters]
+keys=minimal,normal,debug
+
+###########
+# Loggers #
+###########
+
+[logger_root]
+level=WARNING
+handlers=file
+
+################
+# Log Handlers #
+################
+
+[handler_file]
+class=logging.handlers.RotatingFileHandler
+level=WARNING
+formatter=normal
+args=('/var/log/trove-guestagent.log', 'a', 100 * 1024 * 1024) # log file limit is 100MB
+
+##################
+# Log Formatters #
+##################
+
+[formatter_minimal]
+format=%(message)s
+
+[formatter_normal]
+format=(%(name)s): %(asctime)s %(levelname)s %(message)s
+
+[formatter_debug]
+format=(%(name)s): %(asctime)s %(levelname)s %(module)s %(funcName)s %(message)s