ISPN-4940 Only include the JCache beans.xml in the embedded uberjar
ISPN-4967 Deprecate ProtobufMetadataManagerMBean.registerProtofiles(String... classPathResources)
ISPN-4966 The <backups/> element should be a sub-element of all cache-types, not just clustered caches
ISPN-4961 Bump parsers and schemas to 7.1

- Altered org.infinispan.Version to retrieve the version using
maven-injection-plugin
- Improved SampleConfigFilesCorrectnessTest so that it accepts only
files with the latest schema
- Altered the documentation so that the version is dynamically replaced