feat(NODE-1474): refine config tool and add config versioning (#2299)

**Changes:**

- Rename and change type to bool: nns_public_key_exists,
node_operator_private_key_path, use_ssh_authorized_keys,
inject_ic_crypto, inject_ic_state, inject_ic_registry_local_store,
- Add GuestOSDevSettings fields: hostname (will be used to manually set
hostname in testing), generate_ic_boundary_tls_cert ([used for creating
a testnet with API BNs](#2290))
- Add config commands: GenerateGuestosConfig, GenerateTestnetConfig
- Add config_version field, config version unit tests, and defined
protocol for updating config
- Uncouple domain_name from ipv4_config

rs/ic_os/config/README.md

@@ -1,11 +1,15 @@
 # IC-OS Config
 
-IC-OS Config is responsible for managing the configuration of IC-OS images. 
+IC-OS Config is responsible for managing the configuration of IC-OS images.
 
 SetupOS transforms user-facing configuration files (like `config.ini`, `deployment.json`, etc.) into a SetupOSConfig struct. Then, in production, configuration is propagated from SetupOS → HostOS → GuestOS (→ replica) via the HostOSConfig and GuestOSConfig structures.
 
 All access to configuration and the config partition should go through the config structures.
 
-For testing, IC-OS Config is also used to create HostOS and GuestOS configuration directly.
+For testing, IC-OS Config is also used to create GuestOS configuration directly.
+
+When updating the IC-OS configuration, it's crucial to ensure backwards compatibility.
+For detailed guidelines on updating the configuration, please refer to the documentation in [`types.rs`](src/types.rs).
+Any changes to the configuration should undergo a thorough review process to ensure they follow the guidlines.
 
 For details on the IC-OS configuration mechanism, refer to [ic-os/docs/Configuration.adoc](../../../ic-os/docs/Configuration.adoc)

rs/ic_os/config/src/config_ini.rs

@@ -15,7 +15,7 @@ pub struct ConfigIniSettings {
     pub ipv4_address: Option<Ipv4Addr>,
     pub ipv4_gateway: Option<Ipv4Addr>,
     pub ipv4_prefix_length: Option<u8>,
-    pub domain: Option<String>,
+    pub domain_name: Option<String>,
     pub verbose: bool,
 }
 
@@ -82,7 +82,7 @@ pub fn get_config_ini_settings(config_file_path: &Path) -> Result<ConfigIniSetti
         })
         .transpose()?;
 
-    let domain = config_map.get("domain").cloned();
+    let domain_name = config_map.get("domain").cloned();
 
     let verbose = config_map
         .get("verbose")
@@ -95,7 +95,7 @@ pub fn get_config_ini_settings(config_file_path: &Path) -> Result<ConfigIniSetti
         ipv4_address,
         ipv4_gateway,
         ipv4_prefix_length,
-        domain,
+        domain_name,
         verbose,
     })
 }
@@ -265,7 +265,10 @@ mod tests {
             "212.71.124.177".parse::<Ipv4Addr>()?
         );
         assert_eq!(config_ini_settings.ipv4_prefix_length.unwrap(), 28);
-        assert_eq!(config_ini_settings.domain, Some("example.com".to_string()));
+        assert_eq!(
+            config_ini_settings.domain_name,
+            Some("example.com".to_string())
+        );
         assert!(!config_ini_settings.verbose);
 
         // Test missing ipv6