It appears that Mistral service logs everything, and doesn't use yet
the mask_password (nor mask_dict_password) method. In order to ensure
all is properly masked, we have to add some new patterns, and make it
case insensitive in order to simplify and avoid duplicated entries.
Change-Id: Icc19b7c8bdb6a3182939d5e9fdef21288b19f43d
Related-Bug: #1850843
Signed-off-by: Cédric Jeanneret <cjeanner@redhat.com>