Add new jdbc.driver.class "com.mysql.cj.jdbc.Driver" to jmeter.properties

By providing this new class, this message can be prevented:
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

Author: dgetzlaf

bin/jmeter.properties

@@ -807,7 +807,7 @@ wmlParser.types=text/vnd.wap.wml
 # Database validation query
 # based in https://stackoverflow.com/questions/10684244/dbcp-validationquery-for-different-databases list
 jdbc.config.check.query=select 1 from INFORMATION_SCHEMA.SYSTEM_USERS|select 1 from dual|select 1 from sysibm.sysdummy1|select 1|select 1 from rdb$database
-jdbc.config.jdbc.driver.class=com.mysql.jdbc.Driver|org.postgresql.Driver|oracle.jdbc.OracleDriver|com.ingres.jdbc.IngresDriver|com.microsoft.sqlserver.jdbc.SQLServerDriver|com.microsoft.jdbc.sqlserver.SQLServerDriver|org.apache.derby.jdbc.ClientDriver|org.hsqldb.jdbc.JDBCDriver|com.ibm.db2.jcc.DB2Driver|org.apache.derby.jdbc.ClientDriver|org.h2.Driver|org.firebirdsql.jdbc.FBDriver|org.mariadb.jdbc.Driver|org.sqlite.JDBC|net.sourceforge.jtds.jdbc.Driver|com.exasol.jdbc.EXADriver
+jdbc.config.jdbc.driver.class=com.mysql.cj.jdbc.Driver|com.mysql.jdbc.Driver|org.postgresql.Driver|oracle.jdbc.OracleDriver|com.ingres.jdbc.IngresDriver|com.microsoft.sqlserver.jdbc.SQLServerDriver|com.microsoft.jdbc.sqlserver.SQLServerDriver|org.apache.derby.jdbc.ClientDriver|org.hsqldb.jdbc.JDBCDriver|com.ibm.db2.jcc.DB2Driver|org.apache.derby.jdbc.ClientDriver|org.h2.Driver|org.firebirdsql.jdbc.FBDriver|org.mariadb.jdbc.Driver|org.sqlite.JDBC|net.sourceforge.jtds.jdbc.Driver|com.exasol.jdbc.EXADriver
 
 #---------------------------------------------------------------------------
 # OS Process Sampler configuration