update a sample and documentation

try to sync the documentation with the reality at least about
gflags/cfg changes.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

doc/source/parameters.rst

@@ -93,15 +93,16 @@ The options for log::
   --[no]verbose: show debug output
     (default: 'false')
 
-The option for gflags::
+The option for openstack.common.cfg::
 
-  --flagfile: Insert flag definitions from the given file into the command line.
-    (default: '')
-  --undefok: comma-separated list of flag names that it is okay to specify on
-    the command line even if the program does not define a flag with that name.
-    IMPORTANT: flags in this list that have arguments MUST use the --flag=value
-    format.
-    (default: '')
+  --config-file: Path to a config file to use. Multiple config files
+    can be specified, with values in later files taking precedence.
+    (default: [])
+  --config-dir: Path to a config directory to pull *.conf files from.
+    This file set is sorted, so as to provide a predictable parse order if
+    individual options are over-ridden. The set is parsed after the file(s),
+    if any, specified via --config-file, hence over-ridden options in the
+    directory take precedence.
 
 The options for event dumper::
 

doc/source/step_by_step.rst

@@ -367,7 +367,8 @@ If you use default configurations, you don't have to modify it.
 Just leave it blank::
 
     # Sample configuration file
-    #--wsapi_host=<hostip>
-    #--wsapi_port=<port:8080>
-    #--ofp_listen_host=<hostip>
-    #--ofp_listen_port=<port:6633>
+    [DEFAULT]
+    #wsapi_host=<hostip>
+    #wsapi_port=<port:8080>
+    #ofp_listen_host=<hostip>
+    #ofp_listen_port=<port:6633>

doc/source/using_with_openstack.rst

@@ -74,7 +74,7 @@ from the source, please refer to OpenStack document and get back here again.
 
    * run ryu network os::
 
-      % ryu-manager [----flagfile /etc/ryu/ryu.conf]
+      % ryu-manager
 
 
 * get nova source and quantum source from github

etc/ryu/ryu.conf

@@ -1,6 +1,8 @@
 # Sample configuration file 
 
-#--wsapi_host=<hostip>
-#--wsapi_port=<port:8080>
-#--ofp_listen_host=<hostip>
-#--ofp_listen_port=<port:6633>
+[DEFAULT]
+
+#wsapi_host=<hostip>
+#wsapi_port=<port:8080>
+#ofp_listen_host=<hostip>
+#ofp_listen_port=<port:6633>