Oracle 11xe and 12c database compatibility (#206)

* Sql setup scripts for Oracle and datasource configuration.
* CashSelection for Oracle.
* Workaround of forbidden distinct for BLOBs.
* ojdbc8.jar driver dependency from Oracle Maven repository, ojdbc6.jar from lib (it's not in Maven repo).
* allow to use random Port in node names and trim it from schema name, remove schema with port numbers from db setup (to cater for new test, non Oracle specific change) 
* Removed unnecessary code from ConfigUtilities (non Oracle specific change) 
* Removed db integration tests setup for RPCStabilityTest as it doesn't start any nodes

node-api/src/main/kotlin/net/corda/nodeapi/internal/persistence/HibernateConfiguration.kt

@@ -39,9 +39,9 @@ class HibernateConfiguration(
                 // to avoid OOM when large blobs might get logged.
                 applyBasicType(CordaMaterializedBlobType, CordaMaterializedBlobType.name)
                 applyBasicType(CordaWrapperBinaryType, CordaWrapperBinaryType.name)
-                // When connecting to SqlServer (and only then) do we need to tell hibernate to use
+                // When connecting to SqlServer or Oracle, do we need to tell hibernate to use
                 // nationalised (i.e. Unicode) strings by default
-                val forceUnicodeForSqlServer = jdbcUrl.contains(":sqlserver:", ignoreCase = true)
+                val forceUnicodeForSqlServer = listOf(":oracle:", ":sqlserver:").any { jdbcUrl.contains(it, ignoreCase = true) }
                 enableGlobalNationalizedCharacterDataSupport(forceUnicodeForSqlServer)
                 return build()
             }