Add HDP2 job

- renamed old hdp job to hdp1
- added hdp2 option to integration tests execution
- added hdp2 option to clean-up script
- added hdp2 job to Jenkins
- added hdp2 job to zuul 'check' pipeline
- added hdp2 image uploading to the devstack setup script

Partially implements blueprint hdp2-integration-tests
Change-Id: Idb3873ebf55a37a236a0c0964d01cb0bd8bf2023