Upgrade to Scala 2.12

[dwitry]

• Upgrade Scala to 2.12.7
  • Refactor usage of deprecated API
• Upgrade Cypher front-end to 9.0.20190305
• Upgrade TCK to M13
  • Ignore scenarios that test temporal types
  • Improve ListSlice
• Migrate CucumberReportAdapter to Java
  • As it mostly uses JUnit and Cucumber Java API
  • Avoid unnecessary interop
• Remove mutable nodeHistory in CreateWalker

Signed-off-by: Dwitry dwitry@users.noreply.github.com