* CORDA-1335: Scan attachment Jar only to speed-up the process.
* CORDA-1335: Explicitly mention other types of contracts to scan.
* CORDA-1335: Refactor to eliminate listing different subclasses of Contract in two separate places.
* ENT-1323 Network map service to check all identities in submitted node info
* fixup after rebase
* address PR issues, refactored createValidNodeInfo
* address PR issues
(cherry picked from commit f9ed55b)
* ENT-1323 Network map service to check all identities in submitted node info
* fixup after rebase
* address PR issues, refactored createValidNodeInfo
* address PR issues
Change conversion to toStringShort() instead of toBase58String() - as done for H2 Cash Selection.
Fix withIssuerRefs case - iterate via list of IssuerRefs and setBytes instead of setArray of BYTEA.
Add test for Cash Selection with issuerRef.
Since we are running web-server and different handling methods will be called from
different threads, it is more appropriate to use concurrent data structures
for exchanging information between threads.
Prior to this change I observed the following exception which is likely to be due `certPaths` not synchronized between threads:
```
Caused by: kotlin.KotlinNullPointerException
at net.corda.node.utilities.registration.RegistrationHandler$reply$1.invoke(NodeRegistrationTest.kt:151) ~[integrationTest/:?]
at net.corda.node.utilities.registration.RegistrationHandler$reply$1.invoke(NodeRegistrationTest.kt:122) ~[integrationTest/:?]
at net.corda.core.internal.InternalUtils.logElapsedTime(InternalUtils.kt:221) ~[corda-core-corda-4.0-snapshot.jar:?]
at net.corda.core.internal.InternalUtils.logElapsedTime(InternalUtils.kt:213) ~[corda-core-corda-4.0-snapshot.jar:?]
at net.corda.node.utilities.registration.RegistrationHandler.reply(NodeRegistrationTest.kt:149) ~[integrationTest/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_161]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_161]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161]
```
Packages re-jig was meant to reduce the size of the jars that are being produced by the
node driver. E.g. previously `MessageState` was in package `net.corda` which resulted in jar file
of around 2MB to be created. Same for `NodeStatePersistenceTests` which was in `net.corda.node`
* ENT-1725: Introduce FlowAsyncOperation, which allows suspending a flow on a custom operation, such as long running I/O requests, notary commit, etc.
* Move async execute to internal, add more tests.
* Add a 30s test timeout
* Update API doc
* Improve logging for NetworkMap requests
* Allow interrupt in polling if the process started successfully
* Put `advertiseNewParameters` back
* Additional log line to indicate when all the nodes are started
* Improve logging and use concurrent map since it is updated from multiple threads
* Change NetworkMap response validity duration and rename parameter accordingly
* Changes following code review from @shamsasari
