A number of test not being run on CI

While checking a build log I noticed some tests are not being built.

Something is off, likely on our cmake file.

-- The following subsystems will be built:
--   common
--   kdtree
--   octree
--   ml
--   segmentation
--   people
--   global_tests
--   tests_2d
--   tests_common
--   tests_features
--   tests_filters
--   tests_geometry
--   tests_io
--   tests_kdtree
--   tests_people
--   tests_octree
--   tests_search
--   tests_segmentation
--   tests_sample_consensus
--   tests_visualization
--   surface
--   registration
--   keypoints
--   tracking
--   recognition
--   stereo
--   apps
       building: 
       |_ modeler
       |_ point_cloud_editor
       |_ 3d_rec_framework
       |_ in_hand_scanner
       |_ cloud_composer
--   simulation
--   outofcore
--   examples
--   tools
-- The following subsystems will not be built:
--   tests_keypoints: Requires keypoints.
--   tests_outofcore: Requires outofcore.
--   tests_recognition: Requires recognition.
--   tests_registration: Requires registration.
--   tests_surface: Requires surface.

Start with the linked Azure build log and the CMake configuration that determines subsystem prerequisites. Compare the listed tests that are not built with their dependency requirements and trace why they are omitted. Done means the intended test subsystems are built in CI and the configure output no longer omits them.