misc drm@1.2 vts fixes

* Add VendorModules::getModuleByName
* Skip unsupported schemes in setup
* Skip non-clearkey instances when running clearkey specific tests
* Don't skip clearkey tests for clearkey instance

Bug: 142397658
Change-Id: I44a6b43dd52fbb48cdbb5a077517e3d96acd0a3d
5 files changed