Test execution modes set only in Tess Control Shader

Test execution modes set only in Tess Control Shader

This change adds 9 tests that set execution modes just in Control
Shader and check if TessCoord builtin has correct value in Evaluation
shader.

Components: Vulkan

VK-GL-CTS issue: 2194

Affects:
dEQP-VK.tessellation.tesscoord.*_execution_mode_in_tesc

Change-Id: I5d7aaf04e867ddeef6e7cdd77775bb967d4189bb