tests: GH429 Addr shader_checker validation tests

tests: GH429 Addr shader_checker validation tests

Adds tests that challenge the validation layer on various shader
checker cases including:

1) BAD_SPECIALIZATION
    CreatePipelineCheckShaderBadSpecialization
2) PUSH_CONSTANT_NOT_ACCESSIBLE_FROM_STAGE
    CreatePipelineCheckShaderPushConstantNotAccessible
3) DESCRIPTOR_NOT_ACCESSIBLE_FROM_STAGE
    CreatePipelineCheckShaderDescriptorNotAccessible
4) DESCRIPTOR_TYPE_MISMATCH
    CreatePipelineCheckShaderDescriptorTypeMismatch
5) FEATURE_NOT_ENABLED
    CreatePipelineCheckShaderNotEnabled
6) BAD_CAPABILITY
    CreatePipelineCheckShaderBadCapability

Change-Id: I5ed0efbb8729fa07815093b042e3d0cfce8ff5a3