[FABRIC-1118] NoSuchMethodError: org.apache.felix.utils.properties.Properties.setProperty
[FABRIC-1100] - Immutable Version/Profile constructs
Review FabricService.getDefaultVersion(). Add FabricService.getDefaultVersionId(), getRequiredDefaultVersion()
Split CachingGitDataStore in ZkDataStore and GitDataStore
Add profile registry locking. Make ProfileRegistry.getProfile() atomic