[MDEPLOY-304] Clean up ITs

[jira-importer]

Slawomir Jaranowski opened MDEPLOY-304 and commented

• refresh plugins versions in tests
• remove createChecksum - parameter from tests - was removed in MINSTALL-143
• remove unneeded plugins in test
• remove tests with checksum validation

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Issue Links:

• MDEPLOY-282 Revert MDEPLOY-231
  ("fixes")
• MPOM-289 Use properties to define the versions of plugins

Remote Links:

• GitHub Pull Request #33