Cinder volume type access tests

Added:
- Generic "create_volume_type" method for all tests
- Api for type_access_add
- Api for type_access_remove
- Api for type_access_list

Tests:
- Adding volume type access for a given project
- List volume type access
Note: Cinder V1 does not support volume type access actions

Change-Id: I2387ac3193aa598d061723b0a2d60f0cff53264e
8 files changed