Expose bridge connection feature flag to match backoff parameters

Signed-off-by: James Rhodes <[email protected]>

crates/common/tedge_config/src/tedge_config_cli/tedge_config.rs

@@ -465,7 +465,6 @@ define_tedge_config! {
             /// if this is set to "c8y", then messages published to `c8y/s/us` will be
             /// forwarded by to Cumulocity on the `s/us` topic
             #[tedge_config(example = "c8y", default(function = "c8y_topic_prefix"))]
-            #[doku(skip)] // Hide the configuration in `tedge config list --doc`
             topic_prefix: TopicPrefix,
         },
 
@@ -661,7 +660,6 @@ define_tedge_config! {
 
         bridge: {
             #[tedge_config(default(value = false))]
-            #[doku(skip)] // Hide the configuration in `tedge config list --doc`
             built_in: bool,
 
             reconnect_policy: {
@@ -868,22 +866,6 @@ fn c8y_topic_prefix() -> TopicPrefix {
     TopicPrefix::try_new("c8y").unwrap()
 }
 
-impl ReadableKey {
-    // This is designed to be a simple way of controlling whether values appear in the output of
-    // `tedge config list`. Ideally this would be integrated into [define_tedge_config], see
-    // https://github.com/thin-edge/thin-edge.io/issues/2767 for more detail on that.
-    // Currently this accompanies `#[doku(skip)]` on the relevant configurations, which hides
-    // them in `tedge config list --doc`. The configurations are hidden to avoid unfinished
-    // features from being discovered.
-    pub fn is_printable_value(self, value: &str) -> bool {
-        match self {
-            Self::MqttBridgeBuiltIn => value != "false",
-            Self::C8yBridgeTopicPrefix => value != "c8y",
-            _ => true,
-        }
-    }
-}
-
 #[derive(Clone, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, Deserialize, serde::Serialize)]
 #[serde(try_from = "Cow<'_, str>", into = "Arc<str>")]
 /// A valid MQTT topic prefix, used to customise the c8y/ topic prefix

crates/core/tedge/src/cli/config/commands/list.rs

@@ -33,10 +33,9 @@ fn print_config_list(config: &TEdgeConfig, all: bool) -> Result<(), ConfigError>
     let mut keys_without_values = Vec::new();
     for config_key in ReadableKey::iter() {
         match config.read_string(config_key).ok() {
-            Some(value) if config_key.is_printable_value(&value) => {
+            Some(value) => {
                 println!("{}={}", config_key, value);
             }
-            Some(_) => {}
             None => {
                 keys_without_values.push(config_key);
             }