scripts: T4269: node.def generator should automatically add default values

Since introducing the XML <defaultValue> node it was common, but redundant,
practice to also add a help string indicating which value would be used as
default if the node is unset.

This makes no sense b/c it's duplicated code/value/characters and prone to
error. The node.def scripts should be extended to automatically render the
appropriate default value into the CLI help string.

For e.g. SSH the current PoC renders:

$ cat templates-cfg/service/ssh/port/node.def

multi:
type: txt
help: Port for SSH service (default: 22)
val_help: u32:1-65535; Numeric IP port
...
Not all subsystems are already migrated to get_config_dict() and make use of
the defaults() call - those subsystems need to be migrated, first before the new
default is added to the CLI help.

(cherry picked from commit a68c9238111c6caee78bb28f8054b8f0cfa0e374)

1 files changed, 1 insertions, 1 deletions

diff --git a/interface-definitions/include/accel-ppp/client-ipv6-pool.xml.i b/interface-definitions/include/accel-ppp/client-ipv6-pool.xml.i
index a692f2335..01cf0e040 100644
--- a/interface-definitions/include/accel-ppp/client-ipv6-pool.xml.i
+++ b/interface-definitions/include/accel-ppp/client-ipv6-pool.xml.i
@@ -21,7 +21,7 @@
               <help>Prefix length used for individual client</help>
               <valueHelp>
                 <format>u32:48-128</format>
-                <description>Client prefix length (default: 64)</description>
+                <description>Client prefix length</description>
               </valueHelp>
               <constraint>
                 <validator name="numeric" argument="--range 48-128"/>