ENT-1575 Add db migrations for db attachment changes,
ENT-1566 Fixes for db integration tests -following changes in CORDA-926 (obligatory node properties), upgrade db schema setup in draining mode/RPC tests, set runMigration=true in properties files for db tests, add new tables for deletion in SQL setup scrips
Updated db integration tests description in testing.rst
* 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
* Integration test are parameterised (extends IntegrationTest) to run against a remote database with 4 db scripts run @BeforeClass, @Before, @After and @AfterClass.
* SQL script for SQL Azure and SQL Server databases and templates of JDBC configuration.
* Additional database confing and implied property ${nodeOrganizationName}.
* Integration tests extend from base class which allows to configure database connection (in-memory/remote db) and to run setup/tear down SQL scripts.
