fix(linstorvolumemanager): create local DB path when required (#102)

When the pool master is changed and if it doesn't have a local DB path
then `get_database_path` fails during SR.scan call.
This patch allows creating a diskless path if necessary.

Signed-off-by: Ronan Abhamon <[email protected]>

Author: Wescoeur

drivers/linstorvolumemanager.py

@@ -1747,7 +1747,7 @@ def get_database_path(self):
         :return: The current database path.
         :rtype: str
         """
-        return self._request_database_path(self._linstor)
+        return self._request_database_path(self._linstor, activate=True)
 
     @classmethod
     def get_all_group_names(cls, base_name):