Use associated physical device from custom instance

Use associated physical device from custom instance

Some of the API feature info tests created a custom instance,
but still used the default physical device. This is fixed by
choosing a physical device using the custom instance.

Comparison of VkPhysicalDeviceMemoryProperties was also
changed to only check the active memoryTypes and memoryHeaps
array elements instead of doing one large deMemCmp.

VK-GL-CTS Issue: 3590

Affects:

dEQP-VK.api.info.*

Components: Vulkan
Change-Id: I2378bcd1e97b7f85e533d34c5b5f6ac3e4fa9b93