Mask MariaDBAccount password

MariaDBAccount has been introduced in mariadb-operator and it's used to
define user and secret required by a given service that requests a db.
This patch adds the missing key to the mask script to cover this
scenario.

Signed-off-by: Francesco Pantano <fpantano@redhat.com>

pyscripts/mask.py

@@ -36,7 +36,7 @@
     "ldap_dns_password", "neutron_admin_password", "admin_token",
     "ca_password" "hdfs_ssh_pw", "maprfs_ssh_pw", "powervm_mgr_passwd",
     "virtual_power_host_pass", "vnc_password", "s3_secret_key",
-    "ca_private_key_passphrase", "heartbeat_key",
+    "ca_private_key_passphrase", "heartbeat_key", "DatabasePassword",
     "server_certs_key_passphrase",
 ]