GitLab

* Fix pybind11 install doc
Signed-off-by: Trevor Morris <tmorris@nvidia.com>

* Set CMAKE_PREFIX_PATH for TF to find pybind11
Signed-off-by: Trevor Morris <tmorris@nvidia.com>

* Update test builds to use pip install of apt.
Signed-off-by: Trevor Morris <tmorris@nvidia.com>

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Signed-off-by: Trevor Morris <tmorris@nvidia.com>