Capability 'org.wildfly.nosql.mongo.driver-service' is unknown error thrown on WildFly 14 + current master branch

As reported on https://issues.jboss.org/browse/WFNOSQL-28, the wildfly-nosql subsystems are failing on WF14. I will try to work around the failure, following Brian's advice but would still like to see this resolved for other (externally created) subsystems that might hit it.

Example of failure:

2018-10-04 11:09:17,904 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool – 10) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "mongodb"),("mongo" => "default"),("host" => "default")
]): java.lang.IllegalStateException: WFLYCTL0364: Capability 'org.wildfly.nosql.mongo.driver-service' is unknown.
at org.jboss.as.controller.CapabilityReferenceRecorder$DefaultCapabilityReferenceRecorder.getDependentName(CapabilityReferenceRecorder.java:139)
at org.jboss.as.controller.CapabilityReferenceRecorder$ContextDependencyRecorder.processCapabilityRequirement(CapabilityReferenceRecorder.java:196)
at org.jboss.as.controller.CapabilityReferenceRecorder$ContextDependencyRecorder.addCapabilityRequirements(CapabilityReferenceRecorder.java:182)
at org.jboss.as.controller.AttributeDefinition.addCapabilityRequirements(AttributeDefinition.java:1066)
at org.jboss.as.controller.AbstractAddStepHandler.recordCapabilitiesAndRequirements(AbstractAddStepHandler.java:291)
at org.jboss.as.controller.AbstractAddStepHandler.execute(AbstractAddStepHandler.java:154)
at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
at org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:384)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:485)