Fix regressions in synchronization tests for dedicated allocations

Fix regressions in synchronization tests for dedicated allocations

Pass image memory requirements to allocation routine in allocateAndBindMemory.

VK_KHR_get_memory_requirements2 is a device extension (not instance).

Throw NotSupported when external handle requires dedicated allocation,
but 'suballocated' variant of test is being run.

Affects:
dEQP-VK.synchronization.cross_instance.*

Components: Vulkan

VK-GL-CTS issue: 604
Bug: 65490152
Bug: 65202260
Test: Ran tests on couple of Google devices
Change-Id: I3636779459300f5dee2e22b0a2e04762eb7b0601