Unable to connect PostgreSQL DB over SSL from KIE server pod on OCP

Issue

In an attempt to configure KIE server to use External DB (postgresql) over SSL on OCP environment, KIE server is unable to connect to DB with the exception java.lang.ClassNotFoundException: com.ongres.scram.common.stringprep.StringPreparation and then fails to start.

e.g.

05:07:34,756 WARN  [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (MSC service thread 1-8) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: IJ031084: Unable to create connection
    at org.jboss.ironjacamar.jdbcadapters@1.5.11.Final-redhat-00001//org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.getXAManagedConnection(XAManagedConnectionFactory.java:532)
    at org.jboss.ironjacamar.jdbcadapters@1.5.11.Final-redhat-00001//org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.createManagedConnection(XAManagedConnectionFactory.java:439)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1328)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:505)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:640)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:605)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:624)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:440)
    at org.jboss.ironjacamar.impl@1.5.11.Final-redhat-00001//org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:789)
    at org.jboss.ironjacamar.jdbcadapters@1.5.11.Final-redhat-00001//org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:150)
    at org.jboss.as.connector@7.4.10.GA-redhat-00002//org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
    at org.jboss.as.ejb3@7.4.10.GA-redhat-00002//org.jboss.as.ejb3.timerservice.persistence.database.DatabaseTimerPersistence.checkDatabase(DatabaseTimerPersistence.java:375)
    at org.jboss.as.ejb3@7.4.10.GA-redhat-00002//org.jboss.as.ejb3.timerservice.persistence.database.DatabaseTimerPersistence.start(DatabaseTimerPersistence.java:204)
    at org.jboss.msc@1.4.12.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1739)
    at org.jboss.msc@1.4.12.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1701)
    at org.jboss.msc@1.4.12.Final-redhat-00001//org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1559)
    at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
    at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads@2.4.0.Final-redhat-00001//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.NoClassDefFoundError: com/ongres/scram/common/stringprep/StringPreparation
    at org.postgresql@42.2.14//org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:671)
    at org.postgresql@42.2.14//org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:146)
    at org.postgresql@42.2.14//org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:197)
    at org.postgresql@42.2.14//org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49)
    at org.postgresql@42.2.14//org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:217)
    at org.postgresql@42.2.14//org.postgresql.Driver.makeConnection(Driver.java:458)
    at org.postgresql@42.2.14//org.postgresql.Driver.connect(Driver.java:260)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:677)
    at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:228)
    at org.postgresql@42.2.14//org.postgresql.ds.common.BaseDataSource.getConnection(BaseDataSource.java:98)
    at org.postgresql@42.2.14//org.postgresql.xa.PGXADataSource.getXAConnection(PGXADataSource.java:46)
    at org.jboss.ironjacamar.jdbcadapters@1.5.11.Final-redhat-00001//org.jboss.jca.adapters.jdbc.xa.XAManagedConnectionFactory.getXAManagedConnection(XAManagedConnectionFactory.java:516)
    ... 20 more
Caused by: java.lang.ClassNotFoundException: com.ongres.scram.common.stringprep.StringPreparation from [Module "org.postgresql" version 42.2.14 from local module loader @1339e7aa (finder: local module finder @1fb669c3 (roots: /opt/eap/modules,/opt/eap/modules/system/layers/openshift,/opt/eap/modules/system/layers/base/.overlays/layer-base-jboss-eap-7.4.10.CP,/opt/eap/modules/system/layers/base,/opt/eap/modules/system/add-ons/keycloak))]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:255)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
    ... 32 more