Add args and kwargs to packagers __init__

Fixes #51.
Avoid an error when an unexpected param is given, which can happen if a
definition is not correctly built.

virt_backup/backups/packagers/__init__.py

@@ -33,7 +33,7 @@ class _AbstractBackupPackager(ABC):
     #: backups.
     is_shareable = False
 
-    def __init__(self, name=None):
+    def __init__(self, name=None, *args, **kwargs):
         #: Used for logging
         self.name = name
 

virt_backup/backups/packagers/directory.py

@@ -17,7 +17,7 @@ class _AbstractBackupPackagerDir(_AbstractBackupPackager):
     Images are just copied in a directory
     """
 
-    def __init__(self, name, path):
+    def __init__(self, name, path, *args, **kwargs):
         super().__init__(name)
         self.path = path
 

virt_backup/backups/packagers/tar.py

@@ -20,7 +20,14 @@ class _AbstractBackupPackagerTar(_AbstractBackupPackager):
     _mode = ""
 
     def __init__(
-        self, name, path, archive_name, compression=None, compression_lvl=None
+        self,
+        name,
+        path,
+        archive_name,
+        compression=None,
+        compression_lvl=None,
+        *args,
+        **kwargs
     ):
         super().__init__(name)
 

virt_backup/backups/packagers/zstd.py

@@ -18,7 +18,9 @@
 class _AbstractBackupPackagerZSTD(_AbstractBackupPackager):
     _mode = ""
 
-    def __init__(self, name, path, name_prefix, compression_lvl=0, threads=0):
+    def __init__(
+        self, name, path, name_prefix, compression_lvl=0, threads=0, *args, **kwargs
+    ):
         super().__init__(name)
 
         #: Directory path to store the archives in.