Two small style fixes

Reviewed-by: iustinp

Makefile.am

@@ -3,7 +3,7 @@
 # - Keep files sorted; one line per file.
 # - Directories in lib/ must have their own *dir variable (see hypervisor).
 # - All directories must be listed DIRS.
-# - Use autogen.sh to generate Makefile.in and configure script
+# - Use autogen.sh to generate Makefile.in and configure script.
 
 # Automake doesn't export these variables before version 1.10.
 abs_top_builddir = @abs_top_builddir@

lib/opcodes.py

@@ -428,11 +428,13 @@ class OpExportInstance(OpCode):
   OP_ID = "OP_BACKUP_EXPORT"
   __slots__ = ["instance_name", "target_node", "shutdown"]
 
+
 class OpRemoveExport(OpCode):
   """Remove an instance's export."""
   OP_ID = "OP_BACKUP_REMOVE"
   __slots__ = ["instance_name"]
 
+
 # Tags opcodes
 class OpGetTags(OpCode):
   """Returns the tags of the given object."""