Revert mariadb jdbc version

Revert mariadb jdbc version

The new mariadb jdbc version is causing intermittent CSIT errors in
PAP.  Reverted to previous version.

[EL Warning]: 2020-07-02 15:08:48.318--ServerSession(404947798)--Exception
  [EclipseLink-4002] (Eclipse Persistence Services -
  2.7.5.v20191016-ea124dd158):
  org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLSyntaxErrorException: (conn=11) You have an
  error in your SQL syntax; check the manual that corresponds to your
  MariaDB server version for the right syntax to use near
  ' derived_from_name VARCHAR, derived_from_version VARCHAR,
  name VARCHAR(120) NOT ' at line 1
Error Code: 1064
Call: CREATE TABLE ToscaDataType (DESCRIPTION VARCHAR,
  derived_from_name VARCHAR, derived_from_version VARCHAR,
  name VARCHAR(120) NOT NULL, version VARCHAR(20) NOT NULL,
  PRIMARY KEY (name, version))

Issue-ID: POLICY-2387
Change-Id: I138f4d395f150563474afe719966927789ae1f6e
Signed-off-by: Jim Hahn <jrh3@att.com>