Test unnamed ubos with bindless
We have some tests with names UBOs that pass but as reported in mesa#1900 (closed) mesa has bugs with unnamed ubos containing samplers. This adds some piglit tests to help detect those issues.
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We have some tests with names UBOs that pass but as reported in mesa#1900 (closed) mesa has bugs with unnamed ubos containing samplers. This adds some piglit tests to help detect those issues.