[test] added minimal db seed for extensions tests
[test] added minimal db seed for extensions tests

dacrome/connector4java-integration-tests,dacrome/connector4java-integration-tests,tkrille/osiam-connector4java-integration-tests,osiam/connector4java-integration-tests,osiam/connector4java-integration-tests,tkrille/osiam-connector4java-integration-tests,tkrille/osiam-connector4java-integration-tests