CONFIG REWRITE: don't throw some options on config rewrite

Those options will be thrown without this patch:
  include, rename-command, min-slaves-to-write, min-slaves-max-lag,
appendfilename.

redis.conf

@@ -12,6 +12,22 @@
 #
 # units are case insensitive so 1GB 1Gb 1gB are all the same.
 
+################################## INCLUDES ###################################
+
+# Include one or more other config files here.  This is useful if you
+# have a standard template that goes to all Redis server but also need
+# to customize a few per-server settings.  Include files can include
+# other files, so use this wisely.
+#
+# Notice option "include" won't be rewritten by command "CONFIG REWRITE"
+# from admin or Redis sentinel, you'd better put this option at the
+# beginning of this file to avoid overwriting config change at runtime.
+#
+# include /path/to/local.conf
+# include /path/to/other.conf
+
+################################ GENERAL  #####################################
+
 # By default Redis does not run as a daemon. Use 'yes' if you need it.
 # Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
 daemonize no
@@ -88,7 +104,7 @@ logfile ""
 # dbid is a number between 0 and 'databases'-1
 databases 16
 
-################################ SNAPSHOTTING  #################################
+################################ SNAPSHOTTING  ################################
 #
 # Save the DB on disk:
 #
@@ -686,12 +702,3 @@ hz 10
 # big latency spikes.
 aof-rewrite-incremental-fsync yes
 
-################################## INCLUDES ###################################
-
-# Include one or more other config files here.  This is useful if you
-# have a standard template that goes to all Redis server but also need
-# to customize a few per-server settings.  Include files can include
-# other files, so use this wisely.
-#
-# include /path/to/local.conf
-# include /path/to/other.conf