B OpenNebula/one#6892: Add upper limit check for passwords. (#3221)

Signed-off-by: Valentyn Bohdan <vbohdan@opennebula.io>

Author: Valentyn Bohdan

source/intro_release_notes/release_notes/whats_new.rst

@@ -61,5 +61,4 @@ Additionally, the following functionalities are present that were not in OpenNeb
 Other Issues Solved
 ================================================================================
 
-- Issue 1
-- Issue 2
+- `Limit password size for each authentication driver to prevent DoS attacks <https://github.com/OpenNebula/one/issues/6892>`__.