layers: LX405 Avoid some checks when rastrization is disabled.

When rasterization is disabled, some pipeline state checks can
be skipped since they would not be used, including sample
counts and viewport/scissor counts.
Add rasterization state to graphics pipelines in the
test suite because it is required.

Change-Id: I88f76038c2acc0abd0565f1655ceeed128557f77
2 files changed