Condense the 802.1AS example configuration.

As we add more and more options, it is getting to be a chore to add
each new option to multiple configuration files.  As we add more
profiles, each with its own example configuration file, the problem
will only get worse.

This patch condenses the gPTP example down to those options which
differ from the built in defaults.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>

gPTP.cfg

@@ -1,82 +1,20 @@
+#
+# 802.1AS example configuration containing those attributes which
+# differ from the defaults.  See the file, default.cfg, for the
+# complete list of available options.
+#
 [global]
-#
-# Default Data Set
-#
-twoStepFlag		1
 gmCapable		1
 priority1		248
 priority2		248
-domainNumber		0
-#utc_offset		37
-clockClass		248
-clockAccuracy		0xFE
-offsetScaledLogVariance	0xFFFF
-free_running		0
-freq_est_interval	1
-dataset_comparison	ieee1588
-G.8275.defaultDS.localPriority	128
-#
-# Port Data Set
-#
-logAnnounceInterval	1
 logSyncInterval		-3
-logMinPdelayReqInterval	0
-announceReceiptTimeout	3
 syncReceiptTimeout	3
-delayAsymmetry		0
-fault_reset_interval	4
 neighborPropDelayThresh	800
 min_neighbor_prop_delay	-20000000
-masterOnly		0
-G.8275.portDS.localPriority	128
-#
-# Run time options
-#
 assume_two_step		1
-logging_level		6
 path_trace_enabled	1
 follow_up_info		1
-hybrid_e2e		0
-net_sync_monitor	0
-tx_timestamp_timeout	1
-use_syslog		1
-verbose			0
-summary_interval	0
-kernel_leap		1
-check_fup_sync		0
-#
-# Servo options
-#
-pi_proportional_const	0.0
-pi_integral_const	0.0
-pi_proportional_scale	0.0
-pi_proportional_exponent	-0.3
-pi_proportional_norm_max	0.7
-pi_integral_scale	0.0
-pi_integral_exponent	0.4
-pi_integral_norm_max	0.3
-step_threshold		0.0
-first_step_threshold	0.00002
-max_frequency		900000000
-clock_servo		pi
-sanity_freq_limit	200000000
-ntpshm_segment		0
-#
-# Transport options
-#
 transportSpecific	0x1
 ptp_dst_mac		01:80:C2:00:00:0E
-p2p_dst_mac		01:80:C2:00:00:0E
-uds_address		/var/run/ptp4l
-#
-# Default interface options
-#
 network_transport	L2
 delay_mechanism		P2P
-time_stamping		hardware
-tsproc_mode		filter
-delay_filter		moving_median
-delay_filter_length	10
-egressLatency		0
-ingressLatency		0
-boundary_clock_jbod	0