NXP-14929 fix null pointer exception when cache is not deployed
Merge branch 'feature-NXP-14929-Provide-a-unified-cache-service'
NXP-15114 fix dependency of redis feature and fix pom to split manifest in test jar

The pom must avoid to get the Nuxeo-component item in the manifest of the test jar because it does NOT contain the service xml file definition
NXP-15114 format xml
NXP-14929 add transactional feature to cache and remove core feature from redis feature
NXP-15153: cleanup
NXP-15153: new isStarted() method
NXP-14929 fix typo concurrency level
NXP-14929 deactivate properly map of cache
NXP-15160 nosql junit based redis server implementation for tests
NXP-15160 reworked redis callable
NXP-15160 fixup classes naming
NXP-15160 fixing script evaluation on varargs
NXP-15160 reworked service init and test fixture integration
NXP-15160 executor and pool should have dedicated component
NXP-15160 fixing copyrights
NXP-15160 fixup warns
NXP-15160 rework failover features and tests
NXP-15160 renamed cache component
NXP-15160 fixup test launchin from jars