Add read_only user in LoginNode dna.json

This parameter is required to check the connection
with the remote directory service and sync the user db.

Signed-off-by: Nicola Sirena <[email protected]>

Author: NSsirena

cli/src/pcluster/resources/login_node/user_data.sh

@@ -61,6 +61,7 @@ write_files:
           "cw_logging_enabled": "${CWLoggingEnabled}",
           "directory_service": {
             "enabled": "${DirectoryServiceEnabled}",
+            "domain_read_only_user": "${DirectoryServiceReadOnlyUser}",
             "generate_ssh_keys_for_users": "${DirectoryServiceGenerateSshKeys}"
           },
           "ebs_shared_dirs": "${EbsSharedDirs}",

cli/src/pcluster/templates/login_nodes_stack.py

@@ -132,6 +132,7 @@ def _add_login_nodes_pool_launch_template(self):
                                 "CustomAwsBatchCliPackage": self._config.custom_aws_batch_cli_package or "",
                                 "CWLoggingEnabled": "true" if self._config.is_cw_logging_enabled else "false",
                                 "DirectoryServiceEnabled": str(ds_config is not None).lower(),
+                                "DirectoryServiceReadOnlyUser": ds_config.domain_read_only_user if ds_config else "",
                                 "DirectoryServiceGenerateSshKeys": ds_generate_keys,
                                 "EbsSharedDirs": to_comma_separated_string(
                                     self._shared_storage_mount_dirs[SharedStorageType.EBS]