send storage_version to client

subiquity/common/types.py

@@ -316,6 +316,7 @@ class StorageResponse:
     config: Optional[list] = None
     blockdev: Optional[dict] = None
     dasd: Optional[dict] = None
+    storage_version: int = 1
 
 
 @attr.s(auto_attribs=True)

subiquity/models/filesystem.py

@@ -1020,6 +1020,7 @@ class FilesystemModel(object):
     def load_server_data(self, status):
         log.debug('load_server_data %s', status)
         self._all_ids = set()
+        self.storage_version = status.storage_version
         self._orig_config = status.orig_config
         self._probe_data = {
             'blockdev': status.blockdev,

subiquity/server/controllers/filesystem.py

@@ -235,7 +235,8 @@ class FilesystemController(SubiquityController, FilesystemManipulator):
             orig_config=self.model._orig_config,
             config=self.model._render_actions(include_all=True),
             blockdev=self.model._probe_data['blockdev'],
-            dasd=self.model._probe_data.get('dasd', {}))
+            dasd=self.model._probe_data.get('dasd', {}),
+            storage_version=self.model.storage_version)
 
     async def POST(self, config: list):
         log.debug(config)