Use both context and class' class loader when reading component metadata

Caused by: org.hibernate.search.SearchException: Unable to initialize
directory provider:
org.hibernate.search.test.integration.jbossas7.model.Member
at org.hibernate.search.store.impl.DirectoryProviderFactory.createDirectoryProvider(DirectoryProviderFactory.java:87)
at org.hibernate.search.indexes.impl.DirectoryBasedIndexManager.createDirectoryProvider(DirectoryBasedIndexManager.java:232)
at org.hibernate.search.indexes.impl.DirectoryBasedIndexManager.initialize(DirectoryBasedIndexManager.java:100)
at org.hibernate.search.indexes.impl.IndexManagerHolder.createIndexManager(IndexManagerHolder.java:227)
... 19 more
Caused by: org.infinispan.config.ConfigurationException:
org.infinispan.CacheException: Unable to load component metadata!
at org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:386)
at org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:341)
at org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:328)
at org.hibernate.search.infinispan.CacheManagerServiceProvider.start(CacheManagerServiceProvider.java:93)
at org.hibernate.search.engine.impl.StandardServiceManager$ServiceProviderWrapper.startVirtual(StandardServiceManager.java:178)
at org.hibernate.search.engine.impl.StandardServiceManager.requestService(StandardServiceManager.java:124)
at org.hibernate.search.infinispan.impl.InfinispanDirectoryProvider.initialize(InfinispanDirectoryProvider.java:86)
at org.hibernate.search.store.impl.DirectoryProviderFactory.createDirectoryProvider(DirectoryProviderFactory.java:84)
... 22 more
Caused by: org.infinispan.CacheException: Unable to load component metadata!
at org.infinispan.factories.components.ComponentMetadataRepo.initialize(ComponentMetadataRepo.java:131)
at org.infinispan.factories.GlobalComponentRegistry.<init>(GlobalComponentRegistry.java:103)
at org.infinispan.manager.DefaultCacheManager.<init>(DefaultCacheManager.java:381)
... 29 more
Caused by: java.lang.NullPointerException
at org.infinispan.factories.components.ComponentMetadataRepo.readMetadata(ComponentMetadataRepo.java:53)
at org.infinispan.factories.components.ComponentMetadataRepo.initialize(ComponentMetadataRepo.java:129)
... 31 more

The exception above is caused by Infinispan using (by default) invocation context's ClassLoader when trying to read the component metadata. In a modularized environment such as AS7 this will cause the metadata not to be found (metadata is packaged in the same jar as the infinispan class that reads it). In order to overcome this problem we should try to use both class' ClassLoader and InvocationContxt's class loader when trying to read the metadata.
Workaround: set the class loader on the GlobalConfiguration object:

GlobalConfiguration.classLoader( GlobalConfiguration.class.getClassLoder())