Add AHB lifetime test

[ahesham-arm]

Add lifetime test for AHardwareBuffer in which for both CL Buffers and CL Images the following steps are taken

• Create AHB
• Create mem object from the AHB
• Release the AHB
• Read and write from and to the mem object
• Verify the reads and write have happened sucessfully

The CL implementation should maintain a reference count to the AHB since the AHB must not be deallocated for the test to pass.