EXAMPLES: add "traces.cfg" with traces examples

Add an example on how to use the traces section. The example use the
3.1-dev8 syntax and enables all traces on stderr.

Author: wlallemand

examples/traces.cfg

@@ -0,0 +1,21 @@
+# This configuration example enables all trace available and output them on
+# stderr.
+# "stream" traces need haproxy to be compiled with -DDEBUG_DEV or -DDEBUG_FULL
+
+.if version_atleast(3.1-dev8)
+traces
+	trace all sink stderr level developer
+
+	trace pt verbosity complete start now
+	trace h1 verbosity complete start now
+	trace h2 verbosity complete start now
+	trace fcgi verbosity complete start now
+	trace spop verbosity complete start now
+	trace stream verbosity complete start now
+	trace check verbosity complete start now
+	trace applet verbosity complete start now
+	trace h3 start now
+	trace quic start now
+	trace qmux start now
+	trace peers start now
+.endif