Configuration templates are redefined as concrete caches

Since ISPN-7066 stopping the server causes warnings like:

WARN [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000004: Failure during stop of service jboss.datagrid-infinispan.clustered.indexed.config: java.lang.IllegalStateException: ISPN000371: Cannot remove cache configuration 'indexed' because it is in use
at org.infinispan.manager.DefaultCacheManager.undefineConfiguration(DefaultCacheManager.java:391)
at org.infinispan.manager.impl.AbstractDelegatingEmbeddedCacheManager.undefineConfiguration(AbstractDelegatingEmbeddedCacheManager.java:49)
at org.infinispan.server.infinispan.SecurityActions$4.run(SecurityActions.java:122)
at org.infinispan.server.infinispan.SecurityActions$4.run(SecurityActions.java:119)
at org.infinispan.security.Security.doPrivileged(Security.java:76)
at org.infinispan.server.infinispan.SecurityActions.doPrivileged(SecurityActions.java:66)
at org.infinispan.server.infinispan.SecurityActions.undefineContainerConfiguration(SecurityActions.java:126)
at org.jboss.as.clustering.infinispan.subsystem.AbstractCacheConfigurationService.stop(AbstractCacheConfigurationService.java:89)
at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2056)
at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2017)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)