CORDA-499: Remove further Kt classes (#1489)

* Change how NetworkHostAndPort is parsed

Change from using a global extension function to parse
NetworkHostAndPort strings, into using a function on the companion
object. This is a lot easier for Java interop and matches the common
style used elsewhere both in Corda and in Java libraries.

* Move JAR extraction into new utils file

* Move path verification function to ArtemisUtils

Move path verification function "requireOnDefaultFileSystem()" to new
ArtemisUtils.kt file, as this makes more sense from a Java interop
perspective.

* Add JvmName to AMQPSchemaExtensions

* Add JvmName to AMQPSerializationScheme

* Revert "Move JAR extraction into new utils file"

This reverts commit 1f0f41909b68ff21cc24b5efd6a1a360393a0a14.

* Reformat code

* Run formatter on ArtemisUtils

node/src/main/kotlin/net/corda/node/internal/Node.kt

@@ -242,7 +242,7 @@ open class Node(override val configuration: FullNodeConfiguration,
         session.deleteQueue(queueName)
         clientFactory.close()
 
-        return publicHostAndPort.removePrefix("/").parseNetworkHostAndPort().host
+        return NetworkHostAndPort.parse(publicHostAndPort.removePrefix("/")).host
     }
 
     override fun startMessagingService(rpcOps: RPCOps) {

node/src/main/kotlin/net/corda/node/services/messaging/ArtemisMessagingServer.kt

@@ -119,7 +119,7 @@ class ArtemisMessagingServer(override val config: NodeConfiguration,
     private val nodeRunsNetworkMapService = config.networkMapService == null
 
     init {
-        config.baseDirectory.expectedOnDefaultFileSystem()
+        config.baseDirectory.requireOnDefaultFileSystem()
     }
 
     /**