[GSS](7.2.z) WFLY-12563 - org.jboss.jbossfaces.WAR_BUNDLES_JSF_IMPL flag ignored when WARs are embedded in EAR

final DeploymentUnit tl = deploymentUnit.getParent() == null ? deploymentUnit : deploymentUnit.getParent();
String jsfVersion = JsfVersionMarker.getVersion(tl);

String jsfVersion = JsfVersionMarker.getVersion(deploymentUnit);

final DeploymentUnit topLevelDeployment = deploymentUnit.getParent() == null ? deploymentUnit : deploymentUnit.getParent();
final WarMetaData metaData = deploymentUnit.getAttachment(WarMetaData.ATTACHMENT_KEY);

List<ParamValueMetaData> contextParams = new ArrayList<ParamValueMetaData>();

if ((metaData.getWebMetaData() != null) && (metaData.getWebMetaData().getContextParams() != null)) {
	contextParams.addAll(metaData.getWebMetaData().getContextParams());
}

for (final ParamValueMetaData param : contextParams) {
	if ((param.getParamName().equals(WAR_BUNDLES_JSF_IMPL_PARAM) &&
           (param.getParamValue() != null) &&
           (param.getParamValue().toLowerCase(Locale.ENGLISH).equals("true")))) {
        	JsfVersionMarker.setVersion(topLevelDeployment, JsfVersionMarker.WAR_BUNDLES_JSF_IMPL);
                break; // WAR_BUNDLES_JSF_IMPL always wins
         }

         if (param.getParamName().equals(JSF_CONFIG_NAME_PARAM)) {
                JsfVersionMarker.setVersion(topLevelDeployment, param.getParamValue());
                break;
         }
}

2019-09-16 10:46:23,405 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 86) MSC000001: Failed to start service jboss.deployment.subunit."xxx.ear"."yyy.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.subunit."xxx.ear"."yyy.war".undertow-deployment: java.lang.RuntimeException: java.lang.IllegalStateException: Could not find backup for factory javax.faces.application.ApplicationFactory. 
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
	at java.lang.Thread.run(Thread.java:748)
	at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: java.lang.RuntimeException: java.lang.IllegalStateException: Could not find backup for factory javax.faces.application.ApplicationFactory. 
	at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
	... 8 more
Caused by: java.lang.IllegalStateException: Could not find backup for factory javax.faces.application.ApplicationFactory. 
	at javax.faces.FactoryFinderInstance.notNullFactory(FactoryFinderInstance.java:524)
	at javax.faces.FactoryFinderInstance.getFactory(FactoryFinderInstance.java:207)
	at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:279)
	at org.apache.myfaces.context.servlet.FacesContextImplBase.getApplication(FacesContextImplBase.java:159)
	at org.apache.myfaces.context.servlet.FacesContextImplBase.getELContext(FacesContextImplBase.java:210)
	at javax.faces.component.UIViewRoot.setLocale(UIViewRoot.java:1602)
	at org.apache.myfaces.webapp.AbstractFacesInitializer._createFacesContext(AbstractFacesInitializer.java:477)
	at org.apache.myfaces.webapp.AbstractFacesInitializer.initStartupFacesContext(AbstractFacesInitializer.java:449)
	at org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:113)
	at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
	at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:216)
	at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:185)
	at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
	at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
	at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
	at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:250)
	... 10 more