Rafael, boa noite!
Assim que está a configuração do datasource e drives no arquivo standalone-full.xml
<datasource jndi-name="java:jboss/datasources/numeradorDS" pool-name="numeradorDS" statistics-enabled="true">
<driver>mysql</driver>
<pool>
<min-pool-size>10</min-pool-size>
<max-pool-size>20</max-pool-size>
</pool>
<security>
<user-name>root</user-name>
<password>root</password>
</security>
</datasource>
<driver name="mysql" module="com.mysql">
<driver-class>com.mysql.cj.jdbc.Driver</driver-class>
<xa-datasource-class>com.mysql.cj.jdbc.MysqlXADataSource</xa-datasource-class>
</driver>