rhel: Add an example to specify custom options
Add an example to specify custom options of ovs-vswitchd and
ovsdb-server.
In the example, the log level for file and console destinations is set to dbg.
# --ovs-vswitchd-wrapper=valgrind
# --ovsdb-server-wrapper=valgrind
#
+# Specify additional options, for example to start with debug logs:
+# --ovs-vswitchd-options='-vconsole:dbg -vfile:dbg'
+# --ovsdb-server-options='-vconsole:dbg -vfile:dbg'
+#
OPTIONS=""
# Uncomment and set the OVS User/Group value
