Add Missing Test Code from v1

[Weltraumschaf]

• in v1 the generated Integration tests have the class name suffix IntTes, in v2 they have the suffix IT
• some test classes are missing in v2:
  • de.otto.teamdojo.repository.CustomAuditEventRepositoryIntTest
  • de.otto.teamdojo.repository.SkillRepositoryIntTest
  • de.otto.teamdojo.security.DomainUserDetailsServiceIntTest
  • de.otto.teamdojo.test.util.*
    • I added them to v2
    • everywhere they were used the generated test code was customized
  • de.otto.teamdojo.web.rest.util.SkillStatusDeterminationUnitTest
  • de.otto.teamdojo.web.rest.AuditResourceIntTest
  • de.otto.teamdojo.web.rest.LogsResourceIntTest
  • de.otto.teamdojo.web.rest.TeamAchievableSkillResourceIntTest