ci-yadp-builder-sanity: fix typo calling yadp_builder.py

In a previous commit the ".py" suffix was left off of
the call to the yadp_builder.py script.  This change
restores it so the check can pass.

Signed-off-by: Kelley Spoon <kelley.spoon@linaro.org>
Change-Id: I0ee753c6415f04a0bb9896189ed2ebf967ce16ec
1 file changed