* All Contract Upgrade functionality performed within a corresponding flow.
Removed RPC API calls for contract upgrade authorisation / de-authorisation.
Added persistence using AppendOnlyPersistentMap.
* Changed to using a PersistentMap to ensure entries can be removed (was causing failing de-authorisation tests).
Fixed all warnings.
* Added mandatory @Suspendable annotations to flows.
* Do not instantiate object unless overridden.
* Updated changelog and CordaDocs.
* Persistence simplification: only store upgrade contract class name (not serialized object)
* Remove nullability from contract_class_name DB column.
Fixup tests after rebase
Add unit tests of Persistent Identity. Fix bugs in PersistentMap.
Wrap identity and network map RPC calls in database transaction
Address PR comments
* Enable RPC start of Flows that return nothing (eg. Void).
* Fix blocking test (caused by not running mockNetwork).
Improve execution times by moving redundant setup() initialisation to only tests that use it.
* Rename KeyFactory to CompositeKeyFactory
* Move expandedCompositeKeys into TestDSL as the only place that uses it
* Move NullKeys out of their own package
* Move remaining crypto classes into superpackage
* Move utility classes out of crypto and into utilities package
Registration may fail due to low level serialization problems especially when running in AMQP mode
Also some minor improvements for exceptions reporting and test coverage
Move `ContentSignerBuilder` into `net.corda.node.utilities` so it's not part of the API visible to CorDapp developers, when it's only needed inside the node itself.
* Remove notify/notifyAll from public Vault Service API.
* 1st pass - remove ContractUpgrade public API calls from VaultService into self contained ContractUpgradeService.
* Fix compile error caused by cut'n'paste refactoring.
Work on database backed NetworkMapCache
Make NodeInfo JPA entity.
Enable node startup with it's database network map cache. Fix schema.
Make node not wait for finishing network map service registration if it
successfully loaded data from database.
Add tests for startup without NetworkMapService.
* Rename networkMapRegistrationFuture
Change networkMapRegistrationFuture to nodeReadyFuture, it no longer
indicates the NetworkMapService registration, because we are able to run
network without map service configured.
* Partially integrate database into NetworkMapCache
Full integrtion will come with service removal.
Move MockServiceHubInternal to net.corda.node.testing
* Add workaround to transaction scope race
Temporary workaround to force isolated transaction (otherwise it causes race conditions when processing
network map registration on network map node).
* Remove WorldMapLocation from NodeInfo
Infer the node's location based on X500 name
Add serial number on NodeInfo
For tests of running without NetworkMap, start nodes with nonexistent NetworkMap address
Make clearNetworkMapCache callable via RPC.
Move default session ID into messaging service to clean up the API. This means it no longer shows up in a Java class (ServiceHubInternalKt) as its only member, and is instead scoped into the service that actually uses the value. This does result in a MessagingService.Companion object (as MessagingService is an interface), however this is probably the most sensible solution.
